22021112001 has 12 divisors (see below), whose sum is σ = 34155194352. Its totient is φ = 12583492488.

The previous prime is 22021111999. The next prime is 22021112023. The reversal of 22021112001 is 10021112022.

It is not a de Polignac number, because 22021112001 - 2¹ = 22021111999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021112051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74901595 + ... + 74901888.

It is an arithmetic number, because the mean of its divisors is an integer number (2846266196).

Almost surely, 2^22021112001 is an apocalyptic number.

22021112001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22021112001 is a deficient number, since it is larger than the sum of its proper divisors (12134082351).

22021112001 is a wasteful number, since it uses less digits than its factorization.

22021112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149803500 (or 149803493 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22021112001 its reverse (10021112022), we get a palindrome (32042224023).

The spelling of 22021112001 in words is "twenty-two billion, twenty-one million, one hundred twelve thousand, one".