99901012 has 24 divisors (see below), whose sum is σ = 184796640. Its totient is φ = 47124000.

The previous prime is 99901001. The next prime is 99901013. The reversal of 99901012 is 21010999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99901013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16458 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (7699860).

Almost surely, 2^99901012 is an apocalyptic number.

It is an amenable number.

99901012 is a deficient number, since it is larger than the sum of its proper divisors (84895628).

99901012 is a wasteful number, since it uses less digits than its factorization.

99901012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5511 (or 5509 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 99901012 is about 9995.0493745654. The cubic root of 99901012 is about 464.0056789337.

The spelling of 99901012 in words is "ninety-nine million, nine hundred one thousand, twelve".