22120222111212 has 48 divisors (see below), whose sum is σ = 53860386263040. Its totient is φ = 7052503062528.

The previous prime is 22120222111187. The next prime is 22120222111231. The reversal of 22120222111212 is 21211122202122.

It is a super-2 number, since 2×22120222111212² (a number of 27 digits) contains 22 as substring.

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, 4278828 + ... + 7908780.

It is an arithmetic number, because the mean of its divisors is an integer number (1122091380480).

Almost surely, 2^{22120222111212} is an apocalyptic number.

It is an amenable number.

22120222111212 is an abundant number, since it is smaller than the sum of its proper divisors (31740164151828).

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

22120222111212 is a wasteful number, since it uses less digits than its factorization.

22120222111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652062 (or 3652060 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22120222111212 its reverse (21211122202122), we get a palindrome (43331344313334).

It can be divided in two parts, 2212022 and 2111212, that added together give a palindrome (4323234).

The spelling of 22120222111212 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".