99212705 has 4 divisors (see below), whose sum is σ = 119055252. Its totient is φ = 79370160.

The previous prime is 99212681. The next prime is 99212717. The reversal of 99212705 is 50721299.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74252689 + 24960016 = 8617^2 + 4996^2 .

It is not a de Polignac number, because 99212705 - 2²² = 95018401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9921266 + ... + 9921275.

It is an arithmetic number, because the mean of its divisors is an integer number (29763813).

Almost surely, 2^99212705 is an apocalyptic number.

It is an amenable number.

99212705 is a deficient number, since it is larger than the sum of its proper divisors (19842547).

99212705 is a wasteful number, since it uses less digits than its factorization.

99212705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19842546.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 99212705 is about 9960.5574643190. The cubic root of 99212705 is about 462.9375727322.

The spelling of 99212705 in words is "ninety-nine million, two hundred twelve thousand, seven hundred five".