200102012121 has 16 divisors (see below), whose sum is σ = 298156436928. Its totient is φ = 118316044800.

The previous prime is 200102012111. The next prime is 200102012191. The reversal of 200102012121 is 121210201002.

It is not a de Polignac number, because 200102012121 - 2²⁵ = 200068457689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200102012097 and 200102012106.

It is not an unprimeable number, because it can be changed into a prime (200102012101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73946176 + ... + 73948881.

It is an arithmetic number, because the mean of its divisors is an integer number (18634777308).

Almost surely, 2^200102012121 is an apocalyptic number.

It is an amenable number.

200102012121 is a deficient number, since it is larger than the sum of its proper divisors (98054424807).

200102012121 is a wasteful number, since it uses less digits than its factorization.

200102012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147895112.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 200102012121 its reverse (121210201002), we get a palindrome (321312213123).

The spelling of 200102012121 in words is "two hundred billion, one hundred two million, twelve thousand, one hundred twenty-one".