220212222121210 has 48 divisors (see below), whose sum is σ = 436985468593128. Its totient is φ = 79839553812480.

The previous prime is 220212222121183. The next prime is 220212222121253. The reversal of 220212222121210 is 12121222212022.

It can be written as a sum of positive squares in 4 ways, for example, as 72168813819729 + 148043408301481 = 8495223^2 + 12167309^2 .

It is a super-2 number, since 2×220212222121210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269612367 + ... + 270427906.

Almost surely, 2^{220212222121210} is an apocalyptic number.

220212222121210 is a deficient number, since it is larger than the sum of its proper divisors (216773246471918).

220212222121210 is a wasteful number, since it uses less digits than its factorization.

220212222121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540040639 (or 540040628 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 220212222121210 its reverse (12121222212022), we get a palindrome (232333444333232).

The spelling of 220212222121210 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".