213220100131 has 2 divisors, whose sum is σ = 213220100132. Its totient is φ = 213220100130.

The previous prime is 213220100129. The next prime is 213220100167. The reversal of 213220100131 is 131001022312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213220100131 - 2¹ = 213220100129 is a prime.

It is a super-2 number, since 2×213220100131² (a number of 23 digits) contains 22 as substring.

Together with 213220100129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213220100101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610050065 + 106610050066.

It is an arithmetic number, because the mean of its divisors is an integer number (106610050066).

Almost surely, 2^213220100131 is an apocalyptic number.

213220100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213220100131 is an equidigital number, since it uses as much as digits as its factorization.

213220100131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213220100131 its reverse (131001022312), we get a palindrome (344221122443).

The spelling of 213220100131 in words is "two hundred thirteen billion, two hundred twenty million, one hundred thousand, one hundred thirty-one".