21022222020100 has 144 divisors (see below), whose sum is σ = 58107244648320. Its totient is φ = 6426607564800.

The previous prime is 21022222020091. The next prime is 21022222020113. The reversal of 21022222020100 is 102022222012.

It is a super-3 number, since 3×21022222020100³ (a number of 41 digits) contains 333 as substring.

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, 46262671 + ... + 46714870.

It is an arithmetic number, because the mean of its divisors is an integer number (403522532280).

Almost surely, 2^{21022222020100} is an apocalyptic number.

21022222020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022222020100 is an abundant number, since it is smaller than the sum of its proper divisors (37085022628220).

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

21022222020100 is a wasteful number, since it uses less digits than its factorization.

21022222020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92977598 (or 92977591 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21022222020100 its reverse (102022222012), we get a palindrome (21124244242112).

The spelling of 21022222020100 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-two million, twenty thousand, one hundred".