22011012001 has 4 divisors (see below), whose sum is σ = 24012013104. Its totient is φ = 20010010900.

The previous prime is 22011011999. The next prime is 22011012011. The reversal of 22011012001 is 10021011022.

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 not a de Polignac number, because 22011012001 - 2¹ = 22011011999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011012011) 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, 1000500535 + ... + 1000500556.

It is an arithmetic number, because the mean of its divisors is an integer number (6003003276).

Almost surely, 2^22011012001 is an apocalyptic number.

It is an amenable number.

22011012001 is a deficient number, since it is larger than the sum of its proper divisors (2001001103).

22011012001 is a wasteful number, since it uses less digits than its factorization.

22011012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001001102.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22011012001 its reverse (10021011022), we get a palindrome (32032023023).

The spelling of 22011012001 in words is "twenty-two billion, eleven million, twelve thousand, one".