20312220111019 has 2 divisors, whose sum is σ = 20312220111020. Its totient is φ = 20312220111018.

The previous prime is 20312220110933. The next prime is 20312220111103. The reversal of 20312220111019 is 91011102221302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312220111019 - 2¹⁵ = 20312220078251 is a prime.

It is a super-2 number, since 2×20312220111019² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20312220110984 and 20312220111002.

It is not a weakly prime, because it can be changed into another prime (20312220111119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156110055509 + 10156110055510.

It is an arithmetic number, because the mean of its divisors is an integer number (10156110055510).

Almost surely, 2^{20312220111019} is an apocalyptic number.

20312220111019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312220111019 is an equidigital number, since it uses as much as digits as its factorization.

20312220111019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 20312220111019 in words is "twenty trillion, three hundred twelve billion, two hundred twenty million, one hundred eleven thousand, nineteen".