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1000101000221 = 4872053595483
BaseRepresentation
bin11101000110110101010…
…10100011010000011101
310112121102202110202201222
432203122222203100131
5112341201324001341
62043235015143125
7132153302145221
oct16433252432035
93477382422658
101000101000221
1135615aa3a954
121419ab974aa5
137340319c69b
1436595a18781
151b03556744b
hexe8daaa341d

1000101000221 has 4 divisors (see below), whose sum is σ = 1002154596192. Its totient is φ = 998047404252.

The previous prime is 1000101000211. The next prime is 1000101000287. The reversal of 1000101000221 is 1220001010001.

1000101000221 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-1000101000221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000101000199 and 1000101000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000101000211) 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, 1026797255 + ... + 1026798228.

It is an arithmetic number, because the mean of its divisors is an integer number (250538649048).

Almost surely, 21000101000221 is an apocalyptic number.

It is an amenable number.

1000101000221 is a deficient number, since it is larger than the sum of its proper divisors (2053595971).

1000101000221 is an equidigital number, since it uses as much as digits as its factorization.

1000101000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053595970.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000101000221 its reverse (1220001010001), we get a palindrome (2220102010222).

The spelling of 1000101000221 in words is "one trillion, one hundred one million, two hundred twenty-one", and thus it is an aban number.

Divisors: 1 487 2053595483 1000101000221