20213231311199 has 2 divisors, whose sum is σ = 20213231311200. Its totient is φ = 20213231311198.

The previous prime is 20213231311159. The next prime is 20213231311249. The reversal of 20213231311199 is 99111313231202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20213231311199 - 2²⁰ = 20213230262623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213231311159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106615655599 + 10106615655600.

It is an arithmetic number, because the mean of its divisors is an integer number (10106615655600).

Almost surely, 2^{20213231311199} is an apocalyptic number.

20213231311199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213231311199 is an equidigital number, since it uses as much as digits as its factorization.

20213231311199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 20213231311199 in words is "twenty trillion, two hundred thirteen billion, two hundred thirty-one million, three hundred eleven thousand, one hundred ninety-nine".