22212001212100 has 36 divisors (see below), whose sum is σ = 55085763007744. Its totient is φ = 7615543272480.

The previous prime is 22212001212097. The next prime is 22212001212109. The reversal of 22212001212100 is 121210021222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22212001212109) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15865714452 + ... + 15865715851.

Almost surely, 2^{22212001212100} is an apocalyptic number.

22212001212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212001212100 is an abundant number, since it is smaller than the sum of its proper divisors (32873761795644).

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

22212001212100 is a wasteful number, since it uses less digits than its factorization.

22212001212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31731430324 (or 31731430317 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22212001212100 its reverse (121210021222), we get a palindrome (22333211233322).

The spelling of 22212001212100 in words is "twenty-two trillion, two hundred twelve billion, one million, two hundred twelve thousand, one hundred".