29229491321 has 4 divisors (see below), whose sum is σ = 29230905444. Its totient is φ = 29228077200.

The previous prime is 29229491309. The next prime is 29229491351. The reversal of 29229491321 is 12319492292.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8030131321 + 21199360000 = 89611^2 + 145600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29229491321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29229491351) 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 3 ways as a sum of consecutive naturals, for example, 675590 + ... + 717551.

It is an arithmetic number, because the mean of its divisors is an integer number (7307726361).

Almost surely, 2^29229491321 is an apocalyptic number.

It is an amenable number.

29229491321 is a deficient number, since it is larger than the sum of its proper divisors (1414123).

29229491321 is a wasteful number, since it uses less digits than its factorization.

29229491321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414122.

The product of its digits is 139968, while the sum is 44.

The spelling of 29229491321 in words is "twenty-nine billion, two hundred twenty-nine million, four hundred ninety-one thousand, three hundred twenty-one".