202000010000121 has 24 divisors (see below), whose sum is σ = 300346283906240. Its totient is φ = 130728566372256.

The previous prime is 202000010000027. The next prime is 202000010000137. The reversal of 202000010000121 is 121000010000202.

It is not a de Polignac number, because 202000010000121 - 2⁴⁶ = 131631265822457 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 (202000010010121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 690749755 + ... + 691042128.

Almost surely, 2^{202000010000121} is an apocalyptic number.

It is an amenable number.

202000010000121 is a deficient number, since it is larger than the sum of its proper divisors (98346273906119).

202000010000121 is a wasteful number, since it uses less digits than its factorization.

202000010000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381792365 (or 1381792362 counting only the distinct ones).

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

Adding to 202000010000121 its reverse (121000010000202), we get a palindrome (323000020000323).

The spelling of 202000010000121 in words is "two hundred two trillion, ten million, one hundred twenty-one", and thus it is an aban number.