221320030321619 has 2 divisors, whose sum is σ = 221320030321620. Its totient is φ = 221320030321618.

The previous prime is 221320030321583. The next prime is 221320030321661. The reversal of 221320030321619 is 916123030023122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221320030321619 is a prime.

It is a super-2 number, since 2×221320030321619² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221320030321669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110660015160809 + 110660015160810.

It is an arithmetic number, because the mean of its divisors is an integer number (110660015160810).

Almost surely, 2^{221320030321619} is an apocalyptic number.

221320030321619 is a deficient number, since it is larger than the sum of its proper divisors (1).

221320030321619 is an equidigital number, since it uses as much as digits as its factorization.

221320030321619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 221320030321619 in words is "two hundred twenty-one trillion, three hundred twenty billion, thirty million, three hundred twenty-one thousand, six hundred nineteen".