22122221100212 has 48 divisors (see below), whose sum is σ = 38902102137360. Its totient is φ = 11007469535232.

The previous prime is 22122221100191. The next prime is 22122221100229. The reversal of 22122221100212 is 21200112222122.

It can be written as a sum of positive squares in 8 ways, for example, as 27464444176 + 22094756656036 = 165724^2 + 4700506^2 .

It is a super-4 number, since 4×22122221100212⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

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, 2253455528 + ... + 2253465344.

It is an arithmetic number, because the mean of its divisors is an integer number (810460461195).

Almost surely, 2^{22122221100212} is an apocalyptic number.

It is an amenable number.

22122221100212 is a deficient number, since it is larger than the sum of its proper divisors (16779881037148).

22122221100212 is a wasteful number, since it uses less digits than its factorization.

22122221100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980 (or 12978 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22122221100212 its reverse (21200112222122), we get a palindrome (43322333322334).

The spelling of 22122221100212 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, two hundred twelve".