221627465249 has 2 divisors, whose sum is σ = 221627465250. Its totient is φ = 221627465248.

The previous prime is 221627465231. The next prime is 221627465327. The reversal of 221627465249 is 942564726122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219272110225 + 2355355024 = 468265^2 + 48532^2 .

It is a cyclic number.

It is not a de Polignac number, because 221627465249 - 2¹⁶ = 221627399713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221627465197 and 221627465206.

It is not a weakly prime, because it can be changed into another prime (221627465209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110813732624 + 110813732625.

It is an arithmetic number, because the mean of its divisors is an integer number (110813732625).

Almost surely, 2^221627465249 is an apocalyptic number.

It is an amenable number.

221627465249 is a deficient number, since it is larger than the sum of its proper divisors (1).

221627465249 is an equidigital number, since it uses as much as digits as its factorization.

221627465249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The spelling of 221627465249 in words is "two hundred twenty-one billion, six hundred twenty-seven million, four hundred sixty-five thousand, two hundred forty-nine".