29121245911 has 4 divisors (see below), whose sum is σ = 29798484232. Its totient is φ = 28444007592.

The previous prime is 29121245891. The next prime is 29121245927. The reversal of 29121245911 is 11954212192.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 29121245911 - 2²¹ = 29119148759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29121245941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338619096 + ... + 338619181.

It is an arithmetic number, because the mean of its divisors is an integer number (7449621058).

Almost surely, 2^29121245911 is an apocalyptic number.

29121245911 is a deficient number, since it is larger than the sum of its proper divisors (677238321).

29121245911 is an equidigital number, since it uses as much as digits as its factorization.

29121245911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677238320.

The product of its digits is 12960, while the sum is 37.

The spelling of 29121245911 in words is "twenty-nine billion, one hundred twenty-one million, two hundred forty-five thousand, nine hundred eleven".