221310120019 has 2 divisors, whose sum is σ = 221310120020. Its totient is φ = 221310120018.

The previous prime is 221310119983. The next prime is 221310120023. The reversal of 221310120019 is 910021013122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221310120019 - 2²¹ = 221308022867 is a prime.

It is a super-2 number, since 2×221310120019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221310120029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655060009 + 110655060010.

It is an arithmetic number, because the mean of its divisors is an integer number (110655060010).

Almost surely, 2^221310120019 is an apocalyptic number.

221310120019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221310120019 is an equidigital number, since it uses as much as digits as its factorization.

221310120019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 221310120019 in words is "two hundred twenty-one billion, three hundred ten million, one hundred twenty thousand, nineteen".