29933221 has 2 divisors, whose sum is σ = 29933222. Its totient is φ = 29933220.

The previous prime is 29933213. The next prime is 29933231. The reversal of 29933221 is 12233992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 12321 = 5470^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 29933221 - 2³ = 29933213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29933231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14966610 + 14966611.

It is an arithmetic number, because the mean of its divisors is an integer number (14966611).

Almost surely, 2^29933221 is an apocalyptic number.

It is an amenable number.

29933221 is a deficient number, since it is larger than the sum of its proper divisors (1).

29933221 is an equidigital number, since it uses as much as digits as its factorization.

29933221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 29933221 is about 5471.1261180857. The cubic root of 29933221 is about 310.4925261161.

The spelling of 29933221 in words is "twenty-nine million, nine hundred thirty-three thousand, two hundred twenty-one".