29120031021 has 8 divisors (see below), whose sum is σ = 38836118880. Its totient is φ = 19408648592.

The previous prime is 29120030921. The next prime is 29120031023. The reversal of 29120031021 is 12013002192.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29120031021 - 2⁷ = 29120030893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29120031023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161891 + ... + 1186688.

It is an arithmetic number, because the mean of its divisors is an integer number (4854514860).

Almost surely, 2^29120031021 is an apocalyptic number.

It is an amenable number.

29120031021 is a deficient number, since it is larger than the sum of its proper divisors (9716087859).

29120031021 is a wasteful number, since it uses less digits than its factorization.

29120031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352715.

The product of its (nonzero) digits is 216, while the sum is 21.

The spelling of 29120031021 in words is "twenty-nine billion, one hundred twenty million, thirty-one thousand, twenty-one".