220121222212 has 12 divisors (see below), whose sum is σ = 387228957696. Its totient is φ = 109484377160.

The previous prime is 220121222203. The next prime is 220121222221. The reversal of 220121222212 is 212222121022.

It is an interprime number because it is at equal distance from previous prime (220121222203) and next prime (220121222221).

It is a self number, because there is not a number n which added to its sum of digits gives 220121222212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144057628 + ... + 144059155.

It is an arithmetic number, because the mean of its divisors is an integer number (32269079808).

Almost surely, 2^220121222212 is an apocalyptic number.

It is an amenable number.

220121222212 is a deficient number, since it is larger than the sum of its proper divisors (167107735484).

220121222212 is a wasteful number, since it uses less digits than its factorization.

220121222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288116978 (or 288116976 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220121222212 its reverse (212222121022), we get a palindrome (432343343234).

The spelling of 220121222212 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".