220121123222142 has 24 divisors (see below), whose sum is σ = 497665148155344. Its totient is φ = 70183546534464.

The previous prime is 220121123222111. The next prime is 220121123222191. The reversal of 220121123222142 is 241222321121022.

220121123222142 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 211 + 232 + 2 + 214 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265846766763 + ... + 265846767590.

It is an arithmetic number, because the mean of its divisors is an integer number (20736047839806).

Almost surely, 2^{220121123222142} is an apocalyptic number.

220121123222142 is an abundant number, since it is smaller than the sum of its proper divisors (277544024933202).

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

220121123222142 is a wasteful number, since it uses less digits than its factorization.

220121123222142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531693534384 (or 531693534381 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 220121123222142 its reverse (241222321121022), we get a palindrome (461343444343164).

The spelling of 220121123222142 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred forty-two".