211210202121100 has 72 divisors (see below), whose sum is σ = 564093709073888. Its totient is φ = 66844547481600.

The previous prime is 211210202121073. The next prime is 211210202121161. The reversal of 211210202121100 is 1121202012112.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11604947061 + ... + 11604965260.

Almost surely, 2^{211210202121100} is an apocalyptic number.

211210202121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210202121100 is an abundant number, since it is smaller than the sum of its proper divisors (352883506952788).

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

211210202121100 is a wasteful number, since it uses less digits than its factorization.

211210202121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23209912355 (or 23209912348 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210202121100 its reverse (1121202012112), we get a palindrome (212331404133212).

The spelling of 211210202121100 in words is "two hundred eleven trillion, two hundred ten billion, two hundred two million, one hundred twenty-one thousand, one hundred".