102101212220120 has 64 divisors (see below), whose sum is σ = 233623788192000. Its totient is φ = 40147865923968.

The previous prime is 102101212220113. The next prime is 102101212220123. The reversal of 102101212220120 is 21022212101201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101212220123) 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, 352484069 + ... + 352773611.

It is an arithmetic number, because the mean of its divisors is an integer number (3650371690500).

Almost surely, 2^{102101212220120} is an apocalyptic number.

102101212220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102101212220120 is an abundant number, since it is smaller than the sum of its proper divisors (131522575971880).

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

102101212220120 is a wasteful number, since it uses less digits than its factorization.

102101212220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439032 (or 439028 counting only the distinct ones).

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

Adding to 102101212220120 its reverse (21022212101201), we get a palindrome (123123424321321).

The spelling of 102101212220120 in words is "one hundred two trillion, one hundred one billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty".