220121011211210 has 32 divisors (see below), whose sum is σ = 424238512052880. Its totient is φ = 81937973235712.

The previous prime is 220121011211207. The next prime is 220121011211221. The reversal of 220121011211210 is 12112110121022.

220121011211210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 142823030837881 + 77297980373329 = 11950859^2 + 8791927^2 .

It is a super-2 number, since 2×220121011211210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 7274307779 + ... + 7274338038.

Almost surely, 2^{220121011211210} is an apocalyptic number.

220121011211210 is a deficient number, since it is larger than the sum of its proper divisors (204117500841670).

220121011211210 is a wasteful number, since it uses less digits than its factorization.

220121011211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14548645930.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220121011211210 its reverse (12112110121022), we get a palindrome (232233121332232).

The spelling of 220121011211210 in words is "two hundred twenty trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, two hundred ten".