22120012001 has 16 divisors (see below), whose sum is σ = 22645236096. Its totient is φ = 21599076096.

The previous prime is 22120011997. The next prime is 22120012051. The reversal of 22120012001 is 10021002122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22120012001 - 2² = 22120011997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120012051) 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, 11809001 + ... + 11810873.

It is an arithmetic number, because the mean of its divisors is an integer number (1415327256).

Almost surely, 2^22120012001 is an apocalyptic number.

It is an amenable number.

22120012001 is a deficient number, since it is larger than the sum of its proper divisors (525224095).

22120012001 is a wasteful number, since it uses less digits than its factorization.

22120012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22120012001 its reverse (10021002122), we get a palindrome (32141014123).

The spelling of 22120012001 in words is "twenty-two billion, one hundred twenty million, twelve thousand, one".