99212127 has 32 divisors (see below), whose sum is σ = 154598400. Its totient is φ = 55427328.

The previous prime is 99212123. The next prime is 99212147. The reversal of 99212127 is 72121299.

It is not a de Polignac number, because 99212127 - 2² = 99212123 is a prime.

It is a super-2 number, since 2×99212127² = 19686092287728258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203478 + ... + 203964.

It is an arithmetic number, because the mean of its divisors is an integer number (4831200).

Almost surely, 2^99212127 is an apocalyptic number.

99212127 is a deficient number, since it is larger than the sum of its proper divisors (55386273).

99212127 is a wasteful number, since it uses less digits than its factorization.

99212127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695.

The product of its digits is 4536, while the sum is 33.

The square root of 99212127 is about 9960.5284498364. The cubic root of 99212127 is about 462.9366737262.

It can be divided in two parts, 99 and 212127, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 99212127 in words is "ninety-nine million, two hundred twelve thousand, one hundred twenty-seven".