102211212021220 has 24 divisors (see below), whose sum is σ = 214654997962944. Its totient is φ = 40882303338336.

The previous prime is 102211212021169. The next prime is 102211212021221. The reversal of 102211212021220 is 22120212112201.

It is not an unprimeable number, because it can be changed into a prime (102211212021221) 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, 135957654 + ... + 136707373.

It is an arithmetic number, because the mean of its divisors is an integer number (8943958248456).

Almost surely, 2^{102211212021220} is an apocalyptic number.

102211212021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102211212021220 is an abundant number, since it is smaller than the sum of its proper divisors (112443785941724).

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

102211212021220 is a wasteful number, since it uses less digits than its factorization.

102211212021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272683779 (or 272683777 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102211212021220 its reverse (22120212112201), we get a palindrome (124331424133421).

The spelling of 102211212021220 in words is "one hundred two trillion, two hundred eleven billion, two hundred twelve million, twenty-one thousand, two hundred twenty".