201000200121 has 12 divisors (see below), whose sum is σ = 331809854272. Its totient is φ = 114857257176.

The previous prime is 201000200039. The next prime is 201000200173. The reversal of 201000200121 is 121002000102.

It is not a de Polignac number, because 201000200121 - 2¹⁴ = 201000183737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000200221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1595239621 + ... + 1595239746.

Almost surely, 2^201000200121 is an apocalyptic number.

201000200121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201000200121 is a deficient number, since it is larger than the sum of its proper divisors (130809654151).

201000200121 is a wasteful number, since it uses less digits than its factorization.

201000200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190479380 (or 3190479377 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201000200121 its reverse (121002000102), we get a palindrome (322002200223).

The spelling of 201000200121 in words is "two hundred one billion, two hundred thousand, one hundred twenty-one".