22060201721 has 4 divisors (see below), whose sum is σ = 22573229712. Its totient is φ = 21547173732.

The previous prime is 22060201717. The next prime is 22060201747. The reversal of 22060201721 is 12710206022.

22060201721 = 13013² + 13014² + ... + 13141².

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 22060201721 - 2² = 22060201717 is a prime.

It is a super-2 number, since 2×22060201721² (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 (22060201321) 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, 256513931 + ... + 256514016.

It is an arithmetic number, because the mean of its divisors is an integer number (5643307428).

Almost surely, 2^22060201721 is an apocalyptic number.

It is an amenable number.

22060201721 is a deficient number, since it is larger than the sum of its proper divisors (513027991).

22060201721 is an equidigital number, since it uses as much as digits as its factorization.

22060201721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513027990.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 22060201721 its reverse (12710206022), we get a palindrome (34770407743).

The spelling of 22060201721 in words is "twenty-two billion, sixty million, two hundred one thousand, seven hundred twenty-one".