99912101 has 4 divisors (see below), whose sum is σ = 103135104. Its totient is φ = 96689100.

The previous prime is 99912097. The next prime is 99912139. The reversal of 99912101 is 10121999.

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 not a de Polignac number, because 99912101 - 2² = 99912097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99912151) 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, 1611455 + ... + 1611516.

It is an arithmetic number, because the mean of its divisors is an integer number (25783776).

Almost surely, 2^99912101 is an apocalyptic number.

It is an amenable number.

99912101 is a deficient number, since it is larger than the sum of its proper divisors (3223003).

99912101 is a wasteful number, since it uses less digits than its factorization.

99912101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223002.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 99912101 is about 9995.6040837960. The cubic root of 99912101 is about 464.0228464895.

The spelling of 99912101 in words is "ninety-nine million, nine hundred twelve thousand, one hundred one".