400220211231311 has 2 divisors, whose sum is σ = 400220211231312. Its totient is φ = 400220211231310.

The previous prime is 400220211231287. The next prime is 400220211231349. The reversal of 400220211231311 is 113132112022004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400220211231311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400220211239311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200110105615655 + 200110105615656.

It is an arithmetic number, because the mean of its divisors is an integer number (200110105615656).

Almost surely, 2^{400220211231311} is an apocalyptic number.

400220211231311 is a deficient number, since it is larger than the sum of its proper divisors (1).

400220211231311 is an equidigital number, since it uses as much as digits as its factorization.

400220211231311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 400220211231311 its reverse (113132112022004), we get a palindrome (513352323253315).

The spelling of 400220211231311 in words is "four hundred trillion, two hundred twenty billion, two hundred eleven million, two hundred thirty-one thousand, three hundred eleven".