23221201999 has 16 divisors (see below), whose sum is σ = 23514624000. Its totient is φ = 22930348000.

The previous prime is 23221201921. The next prime is 23221202027. The reversal of 23221201999 is 99910212232.

It is a cyclic number.

It is not a de Polignac number, because 23221201999 - 2²¹ = 23219104847 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 (23221201099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16136322 + ... + 16137760.

It is an arithmetic number, because the mean of its divisors is an integer number (1469664000).

Almost surely, 2^23221201999 is an apocalyptic number.

23221201999 is a deficient number, since it is larger than the sum of its proper divisors (293422001).

23221201999 is a wasteful number, since it uses less digits than its factorization.

23221201999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 23221201999 in words is "twenty-three billion, two hundred twenty-one million, two hundred one thousand, nine hundred ninety-nine".