222681681729 has 12 divisors (see below), whose sum is σ = 346393727316. Its totient is φ = 137034880992.

The previous prime is 222681681653. The next prime is 222681681743. The reversal of 222681681729 is 927186186222.

It can be written as a sum of positive squares in 2 ways, for example, as 150911271729 + 71770410000 = 388473^2 + 267900^2 .

It is not a de Polignac number, because 222681681729 - 2¹⁶ = 222681616193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222681680729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951631002 + ... + 951631235.

It is an arithmetic number, because the mean of its divisors is an integer number (28866143943).

Almost surely, 2^222681681729 is an apocalyptic number.

It is an amenable number.

222681681729 is a deficient number, since it is larger than the sum of its proper divisors (123712045587).

222681681729 is a wasteful number, since it uses less digits than its factorization.

222681681729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903262256 (or 1903262253 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 222681681729 in words is "two hundred twenty-two billion, six hundred eighty-one million, six hundred eighty-one thousand, seven hundred twenty-nine".