222121112020122 has 48 divisors (see below), whose sum is σ = 516778610420160. Its totient is φ = 63462309849792.

The previous prime is 222121112020111. The next prime is 222121112020253. The reversal of 222121112020122 is 221020211121222.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 16613779 + ... + 26837657.

It is an arithmetic number, because the mean of its divisors is an integer number (10766221050420).

Almost surely, 2^{222121112020122} is an apocalyptic number.

222121112020122 is an abundant number, since it is smaller than the sum of its proper divisors (294657498400038).

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

222121112020122 is a wasteful number, since it uses less digits than its factorization.

222121112020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297795 (or 10297788 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222121112020122 its reverse (221020211121222), we get a palindrome (443141323141344).

The spelling of 222121112020122 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, twenty thousand, one hundred twenty-two".