221422056506611 has 2 divisors, whose sum is σ = 221422056506612. Its totient is φ = 221422056506610.

The previous prime is 221422056506603. The next prime is 221422056506639. The reversal of 221422056506611 is 116605650224122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221422056506611 - 2³ = 221422056506603 is a prime.

It is not a weakly prime, because it can be changed into another prime (221422056506681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110711028253305 + 110711028253306.

It is an arithmetic number, because the mean of its divisors is an integer number (110711028253306).

Almost surely, 2^{221422056506611} is an apocalyptic number.

221422056506611 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422056506611 is an equidigital number, since it uses as much as digits as its factorization.

221422056506611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 221422056506611 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, fifty-six million, five hundred six thousand, six hundred eleven".