102002120021022 has 32 divisors (see below), whose sum is σ = 219700038042240. Its totient is φ = 31384815677280.

The previous prime is 102002120020993. The next prime is 102002120021027. The reversal of 102002120021022 is 220120021200201.

It is a junction number, because it is equal to n+sod(n) for n = 102002120020992 and 102002120021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002120021027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3946372 + ... + 14818167.

It is an arithmetic number, because the mean of its divisors is an integer number (6865626188820).

Almost surely, 2^{102002120021022} is an apocalyptic number.

102002120021022 is an abundant number, since it is smaller than the sum of its proper divisors (117697918021218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102002120021022 is a wasteful number, since it uses less digits than its factorization.

102002120021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18834248.

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

Adding to 102002120021022 its reverse (220120021200201), we get a palindrome (322122141221223).

The spelling of 102002120021022 in words is "one hundred two trillion, two billion, one hundred twenty million, twenty-one thousand, twenty-two".