220121011021000 has 64 divisors (see below), whose sum is σ = 515353271546880. Its totient is φ = 88002232484800.

The previous prime is 220121011020971. The next prime is 220121011021069. The reversal of 220121011021000 is 120110121022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55806952 + ... + 59620951.

It is an arithmetic number, because the mean of its divisors is an integer number (8052394867920).

Almost surely, 2^{220121011021000} is an apocalyptic number.

220121011021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121011021000 is an abundant number, since it is smaller than the sum of its proper divisors (295232260525880).

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

220121011021000 is a wasteful number, since it uses less digits than its factorization.

220121011021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115429831 (or 115429817 counting only the distinct ones).

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

Adding to 220121011021000 its reverse (120110121022), we get a palindrome (220241121142022).

The spelling of 220121011021000 in words is "two hundred twenty trillion, one hundred twenty-one billion, eleven million, twenty-one thousand".