29112021 has 16 divisors (see below), whose sum is σ = 43444800. Its totient is φ = 19265904.

The previous prime is 29112011. The next prime is 29112049. The reversal of 29112021 is 12021192.

It is not a de Polignac number, because 29112021 - 2¹⁰ = 29110997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29111985 and 29112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29112011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (2715300).

Almost surely, 2^29112021 is an apocalyptic number.

It is an amenable number.

29112021 is a deficient number, since it is larger than the sum of its proper divisors (14332779).

29112021 is a wasteful number, since it uses less digits than its factorization.

29112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905 (or 7899 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 29112021 is about 5395.5556711056. Note that the first 3 decimals coincide. The cubic root of 29112021 is about 307.6267651052.

The spelling of 29112021 in words is "twenty-nine million, one hundred twelve thousand, twenty-one".