22011212120 has 64 divisors (see below), whose sum is σ = 50193807840. Its totient is φ = 8686412800.

The previous prime is 22011212099. The next prime is 22011212189. The reversal of 22011212120 is 2121211022.

It is a junction number, because it is equal to n+sod(n) for n = 22011212095 and 22011212104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894380 + ... + 918660.

Almost surely, 2^22011212120 is an apocalyptic number.

22011212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011212120 is an abundant number, since it is smaller than the sum of its proper divisors (28182595720).

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

22011212120 is a wasteful number, since it uses less digits than its factorization.

22011212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24596 (or 24592 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22011212120 its reverse (2121211022), we get a palindrome (24132423142).

It can be divided in two parts, 220112 and 12120, that added together give a palindrome (232232).

The spelling of 22011212120 in words is "twenty-two billion, eleven million, two hundred twelve thousand, one hundred twenty".