22105252999 has 4 divisors (see below), whose sum is σ = 22165485664. Its totient is φ = 22045020336.

The previous prime is 22105252979. The next prime is 22105253003. The reversal of 22105252999 is 99925250122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99925250122 = 2 ⋅49962625061.

It is a cyclic number.

It is not a de Polignac number, because 22105252999 - 2¹³ = 22105244807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105252909) 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, 30115782 + ... + 30116515.

It is an arithmetic number, because the mean of its divisors is an integer number (5541371416).

Almost surely, 2^22105252999 is an apocalyptic number.

22105252999 is a deficient number, since it is larger than the sum of its proper divisors (60232665).

22105252999 is an equidigital number, since it uses as much as digits as its factorization.

22105252999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60232664.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 22105252999 in words is "twenty-two billion, one hundred five million, two hundred fifty-two thousand, nine hundred ninety-nine".