102123222021 has 24 divisors (see below), whose sum is σ = 148741669440. Its totient is φ = 67515411456.

The previous prime is 102123222011. The next prime is 102123222023. The reversal of 102123222021 is 120222321201.

It is not a de Polignac number, because 102123222021 - 2⁶ = 102123221957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102123221985 and 102123222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123222023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1063621 + ... + 1155653.

It is an arithmetic number, because the mean of its divisors is an integer number (6197569560).

Almost surely, 2^102123222021 is an apocalyptic number.

It is an amenable number.

102123222021 is a deficient number, since it is larger than the sum of its proper divisors (46618447419).

102123222021 is a wasteful number, since it uses less digits than its factorization.

102123222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93065 (or 93062 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 102123222021 its reverse (120222321201), we get a palindrome (222345543222).

The spelling of 102123222021 in words is "one hundred two billion, one hundred twenty-three million, two hundred twenty-two thousand, twenty-one".