22122220112212 has 24 divisors (see below), whose sum is σ = 42233450015232. Its totient is φ = 10055525856000.

The previous prime is 22122220112131. The next prime is 22122220112233. The reversal of 22122220112212 is 21221102222122.

It is a super-2 number, since 2×22122220112212² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26088333 + ... + 26922955.

It is an arithmetic number, because the mean of its divisors is an integer number (1759727083968).

Almost surely, 2^{22122220112212} is an apocalyptic number.

22122220112212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22122220112212 is a deficient number, since it is larger than the sum of its proper divisors (20111229903020).

22122220112212 is a wasteful number, since it uses less digits than its factorization.

22122220112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437039 (or 1437037 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22122220112212 its reverse (21221102222122), we get a palindrome (43343322334334).

The spelling of 22122220112212 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twelve thousand, two hundred twelve".