22021321201 has 4 divisors (see below), whose sum is σ = 24023259504. Its totient is φ = 20019382900.

The previous prime is 22021321193. The next prime is 22021321241. The reversal of 22021321201 is 10212312022.

It is a happy number.

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 22021321201 - 2³ = 22021321193 is a prime.

It is a super-2 number, since 2×22021321201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021321241) 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, 1000969135 + ... + 1000969156.

It is an arithmetic number, because the mean of its divisors is an integer number (6005814876).

Almost surely, 2^22021321201 is an apocalyptic number.

It is an amenable number.

22021321201 is a deficient number, since it is larger than the sum of its proper divisors (2001938303).

22021321201 is a wasteful number, since it uses less digits than its factorization.

22021321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001938302.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22021321201 its reverse (10212312022), we get a palindrome (32233633223).

The spelling of 22021321201 in words is "twenty-two billion, twenty-one million, three hundred twenty-one thousand, two hundred one".