29159319121 has 3 divisors (see below), whose sum is σ = 29159489883. Its totient is φ = 29159148360.

The previous prime is 29159319103. The next prime is 29159319131. The reversal of 29159319121 is 12191395192.

The square root of 29159319121 is 170761.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 14294832721 + 14864486400 = 119561^2 + 121920^2 .

It is not a de Polignac number, because 29159319121 - 2¹⁵ = 29159286353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29159319131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85381 + ... + 256141.

It is an arithmetic number, because the mean of its divisors is an integer number (9719829961).

Almost surely, 2^29159319121 is an apocalyptic number.

29159319121 is the 170761-st square number.

29159319121 is the 85381-st centered octagonal number.

It is an amenable number.

29159319121 is a deficient number, since it is larger than the sum of its proper divisors (170762).

29159319121 is an frugal number, since it uses more digits than its factorization.

29159319121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341522 (or 170761 counting only the distinct ones).

The product of its digits is 43740, while the sum is 43.

The spelling of 29159319121 in words is "twenty-nine billion, one hundred fifty-nine million, three hundred nineteen thousand, one hundred twenty-one".