9901012000202 has 4 divisors (see below), whose sum is σ = 14851518000306. Its totient is φ = 4950506000100.

The previous prime is 9901012000163. The next prime is 9901012000241. The reversal of 9901012000202 is 2020002101099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9901012000163) and next prime (9901012000241).

It can be written as a sum of positive squares in only one way, i.e., 9252054474961 + 648957525241 = 3041719^2 + 805579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475253000049 + ... + 2475253000052.

Almost surely, 2^{9901012000202} is an apocalyptic number.

9901012000202 is a deficient number, since it is larger than the sum of its proper divisors (4950506000104).

9901012000202 is a wasteful number, since it uses less digits than its factorization.

9901012000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950506000103.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 9901012000202 in words is "nine trillion, nine hundred one billion, twelve million, two hundred two", and thus it is an aban number.