220121200122102 has 48 divisors (see below), whose sum is σ = 477550221445440. Its totient is φ = 73278258687216.

The previous prime is 220121200122101. The next prime is 220121200122181. The reversal of 220121200122102 is 201221002121022.

It is a happy number.

220121200122102 is a `hidden beast` number, since 220 + 1 + 21 + 200 + 1 + 221 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121200122101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44192493 + ... + 48920535.

It is an arithmetic number, because the mean of its divisors is an integer number (9948962946780).

Almost surely, 2^{220121200122102} is an apocalyptic number.

220121200122102 is an abundant number, since it is smaller than the sum of its proper divisors (257429021323338).

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

220121200122102 is a wasteful number, since it uses less digits than its factorization.

220121200122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4731417 (or 4731414 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220121200122102 its reverse (201221002121022), we get a palindrome (421342202243124).

The spelling of 220121200122102 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, one hundred two".