29222921 has 16 divisors (see below), whose sum is σ = 36511104. Its totient is φ = 22771584.

The previous prime is 29222917. The next prime is 29222939. The reversal of 29222921 is 12922292.

It is a cyclic number.

It is not a de Polignac number, because 29222921 - 2² = 29222917 is a prime.

It is a super-2 number, since 2×29222921² = 1707958223544482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29222911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3701 + ... + 8493.

It is an arithmetic number, because the mean of its divisors is an integer number (2281944).

Almost surely, 2^29222921 is an apocalyptic number.

It is an amenable number.

29222921 is a deficient number, since it is larger than the sum of its proper divisors (7288183).

29222921 is a wasteful number, since it uses less digits than its factorization.

29222921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its digits is 2592, while the sum is 29.

The square root of 29222921 is about 5405.8228790814. The cubic root of 29222921 is about 308.0168969479.

The spelling of 29222921 in words is "twenty-nine million, two hundred twenty-two thousand, nine hundred twenty-one".