22011201231 has 16 divisors (see below), whose sum is σ = 32146178400. Its totient is φ = 13334709248.

The previous prime is 22011201217. The next prime is 22011201241. The reversal of 22011201231 is 13210211022.

It is a cyclic number.

It is not a de Polignac number, because 22011201231 - 2⁶ = 22011201167 is a prime.

It is a super-2 number, since 2×22011201231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22011201231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011201211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7439766 + ... + 7442723.

It is an arithmetic number, because the mean of its divisors is an integer number (2009136150).

Almost surely, 2^22011201231 is an apocalyptic number.

22011201231 is a deficient number, since it is larger than the sum of its proper divisors (10134977169).

22011201231 is a wasteful number, since it uses less digits than its factorization.

22011201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14882538.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22011201231 its reverse (13210211022), we get a palindrome (35221412253).

The spelling of 22011201231 in words is "twenty-two billion, eleven million, two hundred one thousand, two hundred thirty-one".