102120233021 has 4 divisors (see below), whose sum is σ = 102924329472. Its totient is φ = 101316136572.

The previous prime is 102120233009. The next prime is 102120233023. The reversal of 102120233021 is 120332021201.

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 102120233021 - 2³⁰ = 101046491197 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 (102120233023) 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, 402048035 + ... + 402048288.

It is an arithmetic number, because the mean of its divisors is an integer number (25731082368).

Almost surely, 2^102120233021 is an apocalyptic number.

It is an amenable number.

102120233021 is a deficient number, since it is larger than the sum of its proper divisors (804096451).

102120233021 is an equidigital number, since it uses as much as digits as its factorization.

102120233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804096450.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102120233021 its reverse (120332021201), we get a palindrome (222452254222).

The spelling of 102120233021 in words is "one hundred two billion, one hundred twenty million, two hundred thirty-three thousand, twenty-one".