22022012012100 has 144 divisors (see below), whose sum is σ = 67473978139008. Its totient is φ = 5526364354560.

The previous prime is 22022012012081. The next prime is 22022012012111. The reversal of 22022012012100 is 121021022022.

It is a super-2 number, since 2×22022012012100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22022012012100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38922834 + ... + 39484566.

It is an arithmetic number, because the mean of its divisors is an integer number (468569292632).

Almost surely, 2^{22022012012100} is an apocalyptic number.

22022012012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22022012012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33736989069504).

22022012012100 is an abundant number, since it is smaller than the sum of its proper divisors (45451966126908).

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

22022012012100 is a wasteful number, since it uses less digits than its factorization.

22022012012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569454 (or 569447 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22022012012100 its reverse (121021022022), we get a palindrome (22143033034122).

The spelling of 22022012012100 in words is "twenty-two trillion, twenty-two billion, twelve million, twelve thousand, one hundred".