22012221012100 has 72 divisors (see below), whose sum is σ = 52109781198048. Its totient is φ = 8004313324800.

The previous prime is 22012221012049. The next prime is 22012221012101. The reversal of 22012221012100 is 121012221022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22012221012101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89711184 + ... + 89956216.

It is an arithmetic number, because the mean of its divisors is an integer number (723746961084).

Almost surely, 2^{22012221012100} is an apocalyptic number.

22012221012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012221012100 is an abundant number, since it is smaller than the sum of its proper divisors (30097560185948).

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

22012221012100 is a wasteful number, since it uses less digits than its factorization.

22012221012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326725 (or 326718 counting only the distinct ones).

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

Adding to 22012221012100 its reverse (121012221022), we get a palindrome (22133233233122).

The spelling of 22012221012100 in words is "twenty-two trillion, twelve billion, two hundred twenty-one million, twelve thousand, one hundred".