222149461 has 2 divisors, whose sum is σ = 222149462. Its totient is φ = 222149460.

The previous prime is 222149437. The next prime is 222149507. The reversal of 222149461 is 164941222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164480625 + 57668836 = 12825^2 + 7594^2 .

It is a cyclic number.

It is not a de Polignac number, because 222149461 - 2²¹ = 220052309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222149261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111074730 + 111074731.

It is an arithmetic number, because the mean of its divisors is an integer number (111074731).

Almost surely, 2^222149461 is an apocalyptic number.

It is an amenable number.

222149461 is a deficient number, since it is larger than the sum of its proper divisors (1).

222149461 is an equidigital number, since it uses as much as digits as its factorization.

222149461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 222149461 is about 14904.6791646114. The cubic root of 222149461 is about 605.6407491033.

The spelling of 222149461 in words is "two hundred twenty-two million, one hundred forty-nine thousand, four hundred sixty-one".