21022022120100 has 144 divisors (see below), whose sum is σ = 60871315986432. Its totient is φ = 5601487731840.

The previous prime is 21022022120081. The next prime is 21022022120137. The reversal of 21022022120100 is 102122022012.

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 21022022120100.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3054191259 + ... + 3054198141.

It is an arithmetic number, because the mean of its divisors is an integer number (422717472128).

Almost surely, 2^{21022022120100} is an apocalyptic number.

21022022120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022022120100 is an abundant number, since it is smaller than the sum of its proper divisors (39849293866332).

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

21022022120100 is a wasteful number, since it uses less digits than its factorization.

21022022120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13386 (or 13379 counting only the distinct ones).

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

Adding to 21022022120100 its reverse (102122022012), we get a palindrome (21124144142112).

The spelling of 21022022120100 in words is "twenty-one trillion, twenty-two billion, twenty-two million, one hundred twenty thousand, one hundred".