220111021212012 has 108 divisors (see below), whose sum is σ = 654503478468840. Its totient is φ = 62182246718592.

The previous prime is 220111021212011. The next prime is 220111021212031. The reversal of 220111021212012 is 210212120111022.

220111021212012 is a `hidden beast` number, since 220 + 1 + 110 + 212 + 120 + 1 + 2 = 666.

It is a super-2 number, since 2×220111021212012² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (220111021212011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 700851378 + ... + 701165369.

It is an arithmetic number, because the mean of its divisors is an integer number (6060217393230).

Almost surely, 2^{220111021212012} is an apocalyptic number.

It is an amenable number.

220111021212012 is an abundant number, since it is smaller than the sum of its proper divisors (434392457256828).

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

220111021212012 is a wasteful number, since it uses less digits than its factorization.

220111021212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402016860 (or 1402016848 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220111021212012 its reverse (210212120111022), we get a palindrome (430323141323034).

The spelling of 220111021212012 in words is "two hundred twenty trillion, one hundred eleven billion, twenty-one million, two hundred twelve thousand, twelve".