222988724899249 has 27 divisors (see below), whose sum is σ = 227132263301697. Its totient is φ = 218920206968064.

The previous prime is 222988724899231. The next prime is 222988724899403. The reversal of 222988724899249 is 942998427889222.

It is a happy number.

The square root of 222988724899249 is 14932807.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6496345756849 + 216492379142400 = 2548793^2 + 14713680^2 .

It is not a de Polignac number, because 222988724899249 - 2²³ = 222988716510641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222988724839249) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 367361984704 + ... + 367361985310.

It is an arithmetic number, because the mean of its divisors is an integer number (8412306048211).

Almost surely, 2^{222988724899249} is an apocalyptic number.

222988724899249 is the 14932807-th square number.

222988724899249 is the 7466404-th centered octagonal number.

It is an amenable number.

222988724899249 is a deficient number, since it is larger than the sum of its proper divisors (4143538402448).

222988724899249 is an frugal number, since it uses more digits than its factorization.

222988724899249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034 (or 1017 counting only the distinct ones).

The product of its digits is 12039487488, while the sum is 85.

The spelling of 222988724899249 in words is "two hundred twenty-two trillion, nine hundred eighty-eight billion, seven hundred twenty-four million, eight hundred ninety-nine thousand, two hundred forty-nine".