221122112099 has 4 divisors (see below), whose sum is σ = 252710985264. Its totient is φ = 189533238936.

The previous prime is 221122112087. The next prime is 221122112153. The reversal of 221122112099 is 990211221122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990211221122 = 2 ⋅495105610561.

It is a cyclic number.

It is not a de Polignac number, because 221122112099 - 2⁸ = 221122111843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122112009) 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, 15794436572 + ... + 15794436585.

It is an arithmetic number, because the mean of its divisors is an integer number (63177746316).

Almost surely, 2^221122112099 is an apocalyptic number.

221122112099 is a deficient number, since it is larger than the sum of its proper divisors (31588873165).

221122112099 is an equidigital number, since it uses as much as digits as its factorization.

221122112099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31588873164.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 221122112099 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, ninety-nine".