22131212210311 has 2 divisors, whose sum is σ = 22131212210312. Its totient is φ = 22131212210310.

The previous prime is 22131212210281. The next prime is 22131212210363. The reversal of 22131212210311 is 11301221213122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22131212210311 - 2²³ = 22131203821703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131212210381) 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 as a sum of consecutive naturals, namely, 11065606105155 + 11065606105156.

It is an arithmetic number, because the mean of its divisors is an integer number (11065606105156).

Almost surely, 2^{22131212210311} is an apocalyptic number.

22131212210311 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131212210311 is an equidigital number, since it uses as much as digits as its factorization.

22131212210311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 22131212210311 its reverse (11301221213122), we get a palindrome (33432433423433).

The spelling of 22131212210311 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twelve million, two hundred ten thousand, three hundred eleven".