22145230511 has 4 divisors (see below), whose sum is σ = 22259972832. Its totient is φ = 22030488192.

The previous prime is 22145230447. The next prime is 22145230517. The reversal of 22145230511 is 11503254122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22145230511 - 2⁶ = 22145230447 is a prime.

It is a super-2 number, since 2×22145230511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145230517) 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, 57370871 + ... + 57371256.

It is an arithmetic number, because the mean of its divisors is an integer number (5564993208).

Almost surely, 2^22145230511 is an apocalyptic number.

22145230511 is a deficient number, since it is larger than the sum of its proper divisors (114742321).

22145230511 is a wasteful number, since it uses less digits than its factorization.

22145230511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114742320.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 22145230511 its reverse (11503254122), we get a palindrome (33648484633).

The spelling of 22145230511 in words is "twenty-two billion, one hundred forty-five million, two hundred thirty thousand, five hundred eleven".