211221110112200 has 48 divisors (see below), whose sum is σ = 501537784884480. Its totient is φ = 82690817572160.

The previous prime is 211221110112163. The next prime is 211221110112227. The reversal of 211221110112200 is 2211011122112.

It is a super-2 number, since 2×211221110112200² (a number of 29 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, 11235156032 + ... + 11235174831.

It is an arithmetic number, because the mean of its divisors is an integer number (10448703851760).

Almost surely, 2^{211221110112200} is an apocalyptic number.

211221110112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211221110112200 is an abundant number, since it is smaller than the sum of its proper divisors (290316674772280).

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

211221110112200 is a wasteful number, since it uses less digits than its factorization.

211221110112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22470330926 (or 22470330917 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211221110112200 its reverse (2211011122112), we get a palindrome (213432121234312).

The spelling of 211221110112200 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred ten million, one hundred twelve thousand, two hundred".