102323445021 has 64 divisors (see below), whose sum is σ = 183196876800. Its totient is φ = 55204156800.

The previous prime is 102323445011. The next prime is 102323445031. The reversal of 102323445021 is 120544323201.

It is an interprime number because it is at equal distance from previous prime (102323445011) and next prime (102323445031).

It is not a de Polignac number, because 102323445021 - 2⁵ = 102323444989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102323445001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27240 + ... + 453198.

It is an arithmetic number, because the mean of its divisors is an integer number (2862451200).

Almost surely, 2^102323445021 is an apocalyptic number.

It is an amenable number.

102323445021 is a deficient number, since it is larger than the sum of its proper divisors (80873431779).

102323445021 is a wasteful number, since it uses less digits than its factorization.

102323445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426047 (or 426041 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 102323445021 its reverse (120544323201), we get a palindrome (222867768222).

The spelling of 102323445021 in words is "one hundred two billion, three hundred twenty-three million, four hundred forty-five thousand, twenty-one".