29817801121 has 4 divisors (see below), whose sum is σ = 29819123712. Its totient is φ = 29816478532.

The previous prime is 29817801109. The next prime is 29817801137. The reversal of 29817801121 is 12110871892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29817801121 - 2⁵ = 29817801089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29847801121) 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 3 ways as a sum of consecutive naturals, for example, 626881 + ... + 672766.

It is an arithmetic number, because the mean of its divisors is an integer number (7454780928).

Almost surely, 2^29817801121 is an apocalyptic number.

It is an amenable number.

29817801121 is a deficient number, since it is larger than the sum of its proper divisors (1322591).

29817801121 is a wasteful number, since it uses less digits than its factorization.

29817801121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322590.

The product of its (nonzero) digits is 16128, while the sum is 40.

The spelling of 29817801121 in words is "twenty-nine billion, eight hundred seventeen million, eight hundred one thousand, one hundred twenty-one".