220111212122122 has 4 divisors (see below), whose sum is σ = 330166818183186. Its totient is φ = 110055606061060.

The previous prime is 220111212122069. The next prime is 220111212122141. The reversal of 220111212122122 is 221221212111022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170941791929841 + 49169420192281 = 13074471^2 + 7012091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220111212122093 and 220111212122102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55027803030529 + ... + 55027803030532.

Almost surely, 2^{220111212122122} is an apocalyptic number.

220111212122122 is a deficient number, since it is larger than the sum of its proper divisors (110055606061064).

220111212122122 is a wasteful number, since it uses less digits than its factorization.

220111212122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110055606061063.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 220111212122122 its reverse (221221212111022), we get a palindrome (441332424233144).

The spelling of 220111212122122 in words is "two hundred twenty trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty-two".