102121001002220 has 24 divisors (see below), whose sum is σ = 214454502528000. Its totient is φ = 40848324129792.

The previous prime is 102121001002219. The next prime is 102121001002261. The reversal of 102121001002220 is 22200100121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121001002195 and 102121001002204.

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, 6909836 + ... + 15874124.

It is an arithmetic number, because the mean of its divisors is an integer number (8935604272000).

Almost surely, 2^{102121001002220} is an apocalyptic number.

102121001002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121001002220 is an abundant number, since it is smaller than the sum of its proper divisors (112333501525780).

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

102121001002220 is a wasteful number, since it uses less digits than its factorization.

102121001002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533897 (or 9533895 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102121001002220 its reverse (22200100121201), we get a palindrome (124321101123421).

The spelling of 102121001002220 in words is "one hundred two trillion, one hundred twenty-one billion, one million, two thousand, two hundred twenty".