221572027 has 2 divisors, whose sum is σ = 221572028. Its totient is φ = 221572026.

The previous prime is 221572019. The next prime is 221572037. The reversal of 221572027 is 720275122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221572027 - 2³ = 221572019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221571986 and 221572004.

It is not a weakly prime, because it can be changed into another prime (221572037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110786013 + 110786014.

It is an arithmetic number, because the mean of its divisors is an integer number (110786014).

Almost surely, 2^221572027 is an apocalyptic number.

221572027 is a deficient number, since it is larger than the sum of its proper divisors (1).

221572027 is an equidigital number, since it uses as much as digits as its factorization.

221572027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 221572027 is about 14885.2956638422. The cubic root of 221572027 is about 605.1155456292.

The spelling of 221572027 in words is "two hundred twenty-one million, five hundred seventy-two thousand, twenty-seven".