22040312013 has 6 divisors (see below), whose sum is σ = 31836006254. Its totient is φ = 14693541336.

The previous prime is 22040312003. The next prime is 22040312029. The reversal of 22040312013 is 31021304022.

It can be written as a sum of positive squares in only one way, i.e., 21645177129 + 395134884 = 147123^2 + 19878^2 .

It is not a de Polignac number, because 22040312013 - 2¹⁷ = 22040180941 is a prime.

It is a super-2 number, since 2×22040312013² (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 (22040312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224461770 + ... + 1224461787.

Almost surely, 2^22040312013 is an apocalyptic number.

It is an amenable number.

22040312013 is a deficient number, since it is larger than the sum of its proper divisors (9795694241).

22040312013 is a wasteful number, since it uses less digits than its factorization.

22040312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448923563 (or 2448923560 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22040312013 its reverse (31021304022), we get a palindrome (53061616035).

The spelling of 22040312013 in words is "twenty-two billion, forty million, three hundred twelve thousand, thirteen".