29972823122 has 54 divisors (see below), whose sum is σ = 51206188887. Its totient is φ = 13147800600.

The previous prime is 29972823121. The next prime is 29972823143. The reversal of 29972823122 is 22132827992.

It can be written as a sum of positive squares in only one way, i.e., 14986411561 + 14986411561 = 122419^2 + 122419^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=122419.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29972823121) 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 26 ways as a sum of consecutive naturals, for example, 83489579 + ... + 83489937.

Almost surely, 2^29972823122 is an apocalyptic number.

29972823122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

29972823122 is a deficient number, since it is larger than the sum of its proper divisors (21233365765).

29972823122 is an equidigital number, since it uses as much as digits as its factorization.

29972823122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 403 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The spelling of 29972823122 in words is "twenty-nine billion, nine hundred seventy-two million, eight hundred twenty-three thousand, one hundred twenty-two".