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203011013331221 = 372766354460667
BaseRepresentation
bin101110001010001100101111…
…010101011100100100010101
3222121210122220120102112020212
4232022030233111130210111
5203102113023403044341
61555433545542535205
760522030106330154
oct5612145725344425
9877718816375225
10203011013331221
115975a53a5a2857
121a928a89737505
138937b19703304
14381badd49b59b
151870bb06075eb
hexb8a32f55c915

203011013331221 has 4 divisors (see below), whose sum is σ = 203011071519552. Its totient is φ = 203010955142892.

The previous prime is 203011013331209. The next prime is 203011013331223. The reversal of 203011013331221 is 122133310110302.

203011013331221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-203011013331221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203011013331223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23502671 + ... + 30957996.

It is an arithmetic number, because the mean of its divisors is an integer number (50752767879888).

Almost surely, 2203011013331221 is an apocalyptic number.

It is an amenable number.

203011013331221 is a deficient number, since it is larger than the sum of its proper divisors (58188331).

203011013331221 is an equidigital number, since it uses as much as digits as its factorization.

203011013331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58188330.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 203011013331221 its reverse (122133310110302), we get a palindrome (325144323441523).

The spelling of 203011013331221 in words is "two hundred three trillion, eleven billion, thirteen million, three hundred thirty-one thousand, two hundred twenty-one".

Divisors: 1 3727663 54460667 203011013331221