20132219915081 has 2 divisors, whose sum is σ = 20132219915082. Its totient is φ = 20132219915080.

The previous prime is 20132219915053. The next prime is 20132219915149. The reversal of 20132219915081 is 18051991223102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20130333315856 + 1886599225 = 4486684^2 + 43435^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132219915081 - 2³⁴ = 20115040045897 is a prime.

It is a super-2 number, since 2×20132219915081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20132219915581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066109957540 + 10066109957541.

It is an arithmetic number, because the mean of its divisors is an integer number (10066109957541).

Almost surely, 2^{20132219915081} is an apocalyptic number.

It is an amenable number.

20132219915081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132219915081 is an equidigital number, since it uses as much as digits as its factorization.

20132219915081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 20132219915081 in words is "twenty trillion, one hundred thirty-two billion, two hundred nineteen million, nine hundred fifteen thousand, eighty-one".