990012010001 has 4 divisors (see below), whose sum is σ = 1131442297152. Its totient is φ = 848581722852.

The previous prime is 990012009967. The next prime is 990012010003. The reversal of 990012010001 is 100010210099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990012010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990012010003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70715143565 + ... + 70715143578.

It is an arithmetic number, because the mean of its divisors is an integer number (282860574288).

Almost surely, 2^990012010001 is an apocalyptic number.

It is an amenable number.

990012010001 is a deficient number, since it is larger than the sum of its proper divisors (141430287151).

990012010001 is a wasteful number, since it uses less digits than its factorization.

990012010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141430287150.

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 990012010001 in words is "nine hundred ninety billion, twelve million, ten thousand, one".