21122096015899 has 2 divisors, whose sum is σ = 21122096015900. Its totient is φ = 21122096015898.

The previous prime is 21122096015843. The next prime is 21122096015941. The reversal of 21122096015899 is 99851069022112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21122096015899 is a prime.

It is a super-2 number, since 2×21122096015899² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21122096015809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561048007949 + 10561048007950.

It is an arithmetic number, because the mean of its divisors is an integer number (10561048007950).

Almost surely, 2^{21122096015899} is an apocalyptic number.

21122096015899 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122096015899 is an equidigital number, since it uses as much as digits as its factorization.

21122096015899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 21122096015899 in words is "twenty-one trillion, one hundred twenty-two billion, ninety-six million, fifteen thousand, eight hundred ninety-nine".