20212213100 has 36 divisors (see below), whose sum is σ = 43870410864. Its totient is φ = 8083058880.

The previous prime is 20212213067. The next prime is 20212213139. The reversal of 20212213100 is 131221202.

It is a happy number.

It is a super-2 number, since 2×20212213100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476354 + ... + 517046.

It is an arithmetic number, because the mean of its divisors is an integer number (1218622524).

Almost surely, 2^20212213100 is an apocalyptic number.

20212213100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212213100 is an abundant number, since it is smaller than the sum of its proper divisors (23658197764).

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

20212213100 is a wasteful number, since it uses less digits than its factorization.

20212213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45674 (or 45667 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20212213100 its reverse (131221202), we get a palindrome (20343434302).

The spelling of 20212213100 in words is "twenty billion, two hundred twelve million, two hundred thirteen thousand, one hundred".