29391016122 has 72 divisors (see below), whose sum is σ = 70257284604. Its totient is φ = 8872710912.

The previous prime is 29391016103. The next prime is 29391016169. The reversal of 29391016122 is 22161019392.

29391016122 is a `hidden beast` number, since 2 + 9 + 39 + 1 + 0 + 1 + 612 + 2 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 6195421521 + 23195594601 = 78711^2 + 152301^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70078 + ... + 252374.

Almost surely, 2^29391016122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29391016122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35128642302).

29391016122 is an abundant number, since it is smaller than the sum of its proper divisors (40866268482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29391016122 is a wasteful number, since it uses less digits than its factorization.

29391016122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182384 (or 182368 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 29391016122 in words is "twenty-nine billion, three hundred ninety-one million, sixteen thousand, one hundred twenty-two".