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22143413221 = 97122804751
BaseRepresentation
bin10100100111110110…
…011010101111100101
32010011012201221102121
4110213312122233211
5330322203210341
614101134105541
71412506623016
oct244766325745
963135657377
1022143413221
11943341a106
12435b94b2b1
13211b785a97
141100c3300d
1589900b4d1
hex527d9abe5

22143413221 has 4 divisors (see below), whose sum is σ = 22166218944. Its totient is φ = 22120607500.

The previous prime is 22143413203. The next prime is 22143413233. The reversal of 22143413221 is 12231434122.

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 not a de Polignac number, because 22143413221 - 215 = 22143380453 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 (22143417221) 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, 11401405 + ... + 11403346.

It is an arithmetic number, because the mean of its divisors is an integer number (5541554736).

Almost surely, 222143413221 is an apocalyptic number.

It is an amenable number.

22143413221 is a deficient number, since it is larger than the sum of its proper divisors (22805723).

22143413221 is an equidigital number, since it uses as much as digits as its factorization.

22143413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22805722.

The product of its digits is 2304, while the sum is 25.

Adding to 22143413221 its reverse (12231434122), we get a palindrome (34374847343).

The spelling of 22143413221 in words is "twenty-two billion, one hundred forty-three million, four hundred thirteen thousand, two hundred twenty-one".

Divisors: 1 971 22804751 22143413221