102313122021 has 96 divisors (see below), whose sum is σ = 175513927680. Its totient is φ = 56741212800.

The previous prime is 102313122013. The next prime is 102313122047. The reversal of 102313122021 is 120221313201.

It is not a de Polignac number, because 102313122021 - 2³ = 102313122013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102313121985 and 102313122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102313122001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38075740 + ... + 38078426.

It is an arithmetic number, because the mean of its divisors is an integer number (1828270080).

Almost surely, 2^102313122021 is an apocalyptic number.

102313122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102313122021 is a deficient number, since it is larger than the sum of its proper divisors (73200805659).

102313122021 is a wasteful number, since it uses less digits than its factorization.

102313122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407 (or 3404 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102313122021 its reverse (120221313201), we get a palindrome (222534435222).

The spelling of 102313122021 in words is "one hundred two billion, three hundred thirteen million, one hundred twenty-two thousand, twenty-one".