21950241311 has 2 divisors, whose sum is σ = 21950241312. Its totient is φ = 21950241310.

The previous prime is 21950241307. The next prime is 21950241361. The reversal of 21950241311 is 11314205912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21950241311 - 2² = 21950241307 is a prime.

It is a super-2 number, since 2×21950241311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21950241361) 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, 10975120655 + 10975120656.

It is an arithmetic number, because the mean of its divisors is an integer number (10975120656).

Almost surely, 2^21950241311 is an apocalyptic number.

21950241311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21950241311 is an equidigital number, since it uses as much as digits as its factorization.

21950241311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 21950241311 in words is "twenty-one billion, nine hundred fifty million, two hundred forty-one thousand, three hundred eleven".