102044010021 has 4 divisors (see below), whose sum is σ = 136058680032. Its totient is φ = 68029340012.

The previous prime is 102044010017. The next prime is 102044010053. The reversal of 102044010021 is 120010440201.

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 102044010021 - 2² = 102044010017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102044010071) 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, 17007335001 + ... + 17007335006.

It is an arithmetic number, because the mean of its divisors is an integer number (34014670008).

Almost surely, 2^102044010021 is an apocalyptic number.

It is an amenable number.

102044010021 is a deficient number, since it is larger than the sum of its proper divisors (34014670011).

102044010021 is an equidigital number, since it uses as much as digits as its factorization.

102044010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34014670010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102044010021 its reverse (120010440201), we get a palindrome (222054450222).

The spelling of 102044010021 in words is "one hundred two billion, forty-four million, ten thousand, twenty-one".