102121012001020 has 24 divisors (see below), whose sum is σ = 214923390265584. Its totient is φ = 40759020978816.

The previous prime is 102121012000967. The next prime is 102121012001053. The reversal of 102121012001020 is 20100210121201.

It is a super-2 number, since 2×102121012001020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5586479482 + ... + 5586497761.

It is an arithmetic number, because the mean of its divisors is an integer number (8955141261066).

Almost surely, 2^{102121012001020} is an apocalyptic number.

102121012001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121012001020 is an abundant number, since it is smaller than the sum of its proper divisors (112802378264564).

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

102121012001020 is a wasteful number, since it uses less digits than its factorization.

102121012001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172977709 (or 11172977707 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102121012001020 its reverse (20100210121201), we get a palindrome (122221222122221).

The spelling of 102121012001020 in words is "one hundred two trillion, one hundred twenty-one billion, twelve million, one thousand, twenty".