212021211100 has 36 divisors (see below), whose sum is σ = 460138610008. Its totient is φ = 84798792000.

The previous prime is 212021211043. The next prime is 212021211113. The reversal of 212021211100 is 1112120212.

It is a super-4 number, since 4×212021211100⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

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, 792490 + ... + 1025710.

Almost surely, 2^212021211100 is an apocalyptic number.

212021211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021211100 is an abundant number, since it is smaller than the sum of its proper divisors (248117398908).

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

212021211100 is a wasteful number, since it uses less digits than its factorization.

212021211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242326 (or 242319 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212021211100 its reverse (1112120212), we get a palindrome (213133331312).

It can be divided in two parts, 2120212 and 11100, that added together give a palindrome (2131312).

The spelling of 212021211100 in words is "two hundred twelve billion, twenty-one million, two hundred eleven thousand, one hundred".