22201021321 has 4 divisors (see below), whose sum is σ = 22203078912. Its totient is φ = 22198963732.

The previous prime is 22201021313. The next prime is 22201021351. The reversal of 22201021321 is 12312010222.

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 a cyclic number.

It is not a de Polignac number, because 22201021321 - 2³ = 22201021313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201021295 and 22201021304.

It is not an unprimeable number, because it can be changed into a prime (22201021301) 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, 1012525 + ... + 1034218.

It is an arithmetic number, because the mean of its divisors is an integer number (5550769728).

Almost surely, 2^22201021321 is an apocalyptic number.

It is an amenable number.

22201021321 is a deficient number, since it is larger than the sum of its proper divisors (2057591).

22201021321 is a wasteful number, since it uses less digits than its factorization.

22201021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057590.

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

Adding to 22201021321 its reverse (12312010222), we get a palindrome (34513031543).

The spelling of 22201021321 in words is "twenty-two billion, two hundred one million, twenty-one thousand, three hundred twenty-one".