102121010212220 has 24 divisors (see below), whose sum is σ = 214454442071184. Its totient is φ = 40848343013376.

The previous prime is 102121010212201. The next prime is 102121010212229. The reversal of 102121010212220 is 22212010121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121010212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11368139 + ... + 18261341.

It is an arithmetic number, because the mean of its divisors is an integer number (8935601752966).

Almost surely, 2^{102121010212220} is an apocalyptic number.

102121010212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121010212220 is an abundant number, since it is smaller than the sum of its proper divisors (112333431858964).

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

102121010212220 is a wasteful number, since it uses less digits than its factorization.

102121010212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633949 (or 7633947 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102121010212220 its reverse (22212010121201), we get a palindrome (124333020333421).

The spelling of 102121010212220 in words is "one hundred two trillion, one hundred twenty-one billion, ten million, two hundred twelve thousand, two hundred twenty".