7729121122 has 32 divisors (see below), whose sum is σ = 12271636080. Its totient is φ = 3645358080.

The previous prime is 7729121119. The next prime is 7729121137. The reversal of 7729121122 is 2211219277.

It can be written as a sum of positive squares in 8 ways, for example, as 6250641721 + 1478479401 = 79061^2 + 38451^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735618 + ... + 746050.

Almost surely, 2^7729121122 is an apocalyptic number.

7729121122 is a deficient number, since it is larger than the sum of its proper divisors (4542514958).

7729121122 is a wasteful number, since it uses less digits than its factorization.

7729121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10758.

The product of its digits is 7056, while the sum is 34.

The square root of 7729121122 is about 87915.4202742613. The cubic root of 7729121122 is about 1977.1670810532.

The spelling of 7729121122 in words is "seven billion, seven hundred twenty-nine million, one hundred twenty-one thousand, one hundred twenty-two".