22122112001 has 4 divisors (see below), whose sum is σ = 24133213104. Its totient is φ = 20111010900.

The previous prime is 22122111997. The next prime is 22122112007. The reversal of 22122112001 is 10021122122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22122112001 - 2² = 22122111997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22122112007) 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, 1005550535 + ... + 1005550556.

It is an arithmetic number, because the mean of its divisors is an integer number (6033303276).

Almost surely, 2^22122112001 is an apocalyptic number.

It is an amenable number.

22122112001 is a deficient number, since it is larger than the sum of its proper divisors (2011101103).

22122112001 is a wasteful number, since it uses less digits than its factorization.

22122112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011101102.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22122112001 its reverse (10021122122), we get a palindrome (32143234123).

The spelling of 22122112001 in words is "twenty-two billion, one hundred twenty-two million, one hundred twelve thousand, one".