222162649 has 12 divisors (see below), whose sum is σ = 242567460. Its totient is φ = 203202720.

The previous prime is 222162637. The next prime is 222162653. The reversal of 222162649 is 946261222.

It can be written as a sum of positive squares in 2 ways, for example, as 175377049 + 46785600 = 13243^2 + 6840^2 .

It is not a de Polignac number, because 222162649 - 2⁵ = 222162617 is a prime.

It is a super-2 number, since 2×222162649² = 98712485221394402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222162659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 21079.

It is an arithmetic number, because the mean of its divisors is an integer number (20213955).

Almost surely, 2^222162649 is an apocalyptic number.

222162649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

222162649 is a deficient number, since it is larger than the sum of its proper divisors (20404811).

222162649 is a wasteful number, since it uses less digits than its factorization.

222162649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21288 (or 21269 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 222162649 is about 14905.1215694472. The cubic root of 222162649 is about 605.6527335755.

The spelling of 222162649 in words is "two hundred twenty-two million, one hundred sixty-two thousand, six hundred forty-nine".