213113221019 has 2 divisors, whose sum is σ = 213113221020. Its totient is φ = 213113221018.

The previous prime is 213113221001. The next prime is 213113221049. The reversal of 213113221019 is 910122311312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213113221019 - 2¹² = 213113216923 is a prime.

It is a super-2 number, since 2×213113221019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213113221049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106556610509 + 106556610510.

It is an arithmetic number, because the mean of its divisors is an integer number (106556610510).

Almost surely, 2^213113221019 is an apocalyptic number.

213113221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

213113221019 is an equidigital number, since it uses as much as digits as its factorization.

213113221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 213113221019 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred twenty-one thousand, nineteen".