200121211120 has 40 divisors (see below), whose sum is σ = 465694144560. Its totient is φ = 79977546240.

The previous prime is 200121211091. The next prime is 200121211139. The reversal of 200121211120 is 21112121002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×200121211120² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200121211120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017526 + ... + 1198165.

It is an arithmetic number, because the mean of its divisors is an integer number (11642353614).

Almost surely, 2^200121211120 is an apocalyptic number.

200121211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121211120 is an abundant number, since it is smaller than the sum of its proper divisors (265572933440).

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

200121211120 is a wasteful number, since it uses less digits than its factorization.

200121211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216833 (or 2216827 counting only the distinct ones).

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

Adding to 200121211120 its reverse (21112121002), we get a palindrome (221233332122).

The spelling of 200121211120 in words is "two hundred billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twenty".