220121112102 has 32 divisors (see below), whose sum is σ = 455441022432. Its totient is φ = 70869521664.

The previous prime is 220121112061. The next prime is 220121112137. The reversal of 220121112102 is 201211121022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3588333 + ... + 3649160.

It is an arithmetic number, because the mean of its divisors is an integer number (14232531951).

Almost surely, 2^220121112102 is an apocalyptic number.

220121112102 is an abundant number, since it is smaller than the sum of its proper divisors (235319910330).

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

220121112102 is a wasteful number, since it uses less digits than its factorization.

220121112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7237672.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220121112102 its reverse (201211121022), we get a palindrome (421332233124).

It can be divided in two parts, 2 and 20121112102, that multiplied together give a palindrome (40242224204).

The spelling of 220121112102 in words is "two hundred twenty billion, one hundred twenty-one million, one hundred twelve thousand, one hundred two".