99212011 has 2 divisors, whose sum is σ = 99212012. Its totient is φ = 99212010.

The previous prime is 99211999. The next prime is 99212021. The reversal of 99212011 is 11021299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99212011 - 2⁵ = 99211979 is a prime.

It is not a weakly prime, because it can be changed into another prime (99212021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49606005 + 49606006.

It is an arithmetic number, because the mean of its divisors is an integer number (49606006).

Almost surely, 2^99212011 is an apocalyptic number.

99212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

99212011 is an equidigital number, since it uses as much as digits as its factorization.

99212011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 99212011 is about 9960.5226268505. The cubic root of 99212011 is about 462.9364933025.

The spelling of 99212011 in words is "ninety-nine million, two hundred twelve thousand, eleven".