200121111210 has 16 divisors (see below), whose sum is σ = 480290666976. Its totient is φ = 53365629648.

The previous prime is 200121111199. The next prime is 200121111221. The reversal of 200121111210 is 12111121002.

It is an interprime number because it is at equal distance from previous prime (200121111199) and next prime (200121111221).

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, 3335351824 + ... + 3335351883.

It is an arithmetic number, because the mean of its divisors is an integer number (30018166686).

Almost surely, 2^200121111210 is an apocalyptic number.

200121111210 is an abundant number, since it is smaller than the sum of its proper divisors (280169555766).

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

200121111210 is a wasteful number, since it uses less digits than its factorization.

200121111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670703717.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200121111210 its reverse (12111121002), we get a palindrome (212232232212).

The spelling of 200121111210 in words is "two hundred billion, one hundred twenty-one million, one hundred eleven thousand, two hundred ten".