22120100012200 has 48 divisors (see below), whose sum is σ = 51450833481660. Its totient is φ = 8844323712000.

The previous prime is 22120100012161. The next prime is 22120100012201. The reversal of 22120100012200 is 221000102122.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8009273564356 + 14110826447844 = 2830066^2 + 3756438^2 .

It is not an unprimeable number, because it can be changed into a prime (22120100012201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22749441 + ... + 23701840.

Almost surely, 2^{22120100012200} is an apocalyptic number.

22120100012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120100012200 is an abundant number, since it is smaller than the sum of its proper divisors (29330733469460).

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

22120100012200 is a wasteful number, since it uses less digits than its factorization.

22120100012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46453678 (or 46453669 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120100012200 its reverse (221000102122), we get a palindrome (22341100114322).

The spelling of 22120100012200 in words is "twenty-two trillion, one hundred twenty billion, one hundred million, twelve thousand, two hundred".