22031220131213 has 2 divisors, whose sum is σ = 22031220131214. Its totient is φ = 22031220131212.

The previous prime is 22031220131189. The next prime is 22031220131237. The reversal of 22031220131213 is 31213102213022.

It is a balanced prime because it is at equal distance from previous prime (22031220131189) and next prime (22031220131237).

It can be written as a sum of positive squares in only one way, i.e., 15092937511369 + 6938282619844 = 3884963^2 + 2634062^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031220131213 - 2⁶ = 22031220131149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031220131513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015610065606 + 11015610065607.

It is an arithmetic number, because the mean of its divisors is an integer number (11015610065607).

Almost surely, 2^{22031220131213} is an apocalyptic number.

It is an amenable number.

22031220131213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031220131213 is an equidigital number, since it uses as much as digits as its factorization.

22031220131213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22031220131213 its reverse (31213102213022), we get a palindrome (53244322344235).

The spelling of 22031220131213 in words is "twenty-two trillion, thirty-one billion, two hundred twenty million, one hundred thirty-one thousand, two hundred thirteen".