213111121019 has 2 divisors, whose sum is σ = 213111121020. Its totient is φ = 213111121018.

The previous prime is 213111121001. The next prime is 213111121031. The reversal of 213111121019 is 910121111312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213111121019 is a prime.

It is a super-2 number, since 2×213111121019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213111120985 and 213111121003.

It is not a weakly prime, because it can be changed into another prime (213111121819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555560509 + 106555560510.

It is an arithmetic number, because the mean of its divisors is an integer number (106555560510).

Almost surely, 2^213111121019 is an apocalyptic number.

213111121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111121019 is an equidigital number, since it uses as much as digits as its factorization.

213111121019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 213111121019 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty-one thousand, nineteen".