200121231121110 has 64 divisors (see below), whose sum is σ = 574707125280960. Its totient is φ = 49260610736640.

The previous prime is 200121231121109. The next prime is 200121231121139. The reversal of 200121231121110 is 11121132121002.

It is a happy number.

200121231121110 is a `hidden beast` number, since 20 + 0 + 121 + 2 + 311 + 211 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28507294371 + ... + 28507301390.

It is an arithmetic number, because the mean of its divisors is an integer number (8979798832515).

Almost surely, 2^{200121231121110} is an apocalyptic number.

200121231121110 is an abundant number, since it is smaller than the sum of its proper divisors (374585894159850).

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

200121231121110 is a wasteful number, since it uses less digits than its factorization.

200121231121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57014595790 (or 57014595784 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 200121231121110 its reverse (11121132121002), we get a palindrome (211242363242112).

The spelling of 200121231121110 in words is "two hundred trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred ten".