211220104200 has 96 divisors (see below), whose sum is σ = 748322669760. Its totient is φ = 48278880000.

The previous prime is 211220104171. The next prime is 211220104211. The reversal of 211220104200 is 2401022112.

It is a super-2 number, since 2×211220104200² (a number of 23 digits) contains 22 as substring.

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 211220104200.

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, 25141051 + ... + 25149450.

It is an arithmetic number, because the mean of its divisors is an integer number (7795027810).

Almost surely, 2^211220104200 is an apocalyptic number.

211220104200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211220104200 is an abundant number, since it is smaller than the sum of its proper divisors (537102565560).

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

211220104200 is a wasteful number, since it uses less digits than its factorization.

211220104200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50290527 (or 50290518 counting only the distinct ones).

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

Adding to 211220104200 its reverse (2401022112), we get a palindrome (213621126312).

The spelling of 211220104200 in words is "two hundred eleven billion, two hundred twenty million, one hundred four thousand, two hundred".