29221081 has 2 divisors, whose sum is σ = 29221082. Its totient is φ = 29221080.

The previous prime is 29221051. The next prime is 29221091. The reversal of 29221081 is 18012292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29214025 + 7056 = 5405^2 + 84^2 .

It is a cyclic number.

It is not a de Polignac number, because 29221081 - 2¹¹ = 29219033 is a prime.

It is a super-2 number, since 2×29221081² = 1707743149617122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29221021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14610540 + 14610541.

It is an arithmetic number, because the mean of its divisors is an integer number (14610541).

Almost surely, 2^29221081 is an apocalyptic number.

It is an amenable number.

29221081 is a deficient number, since it is larger than the sum of its proper divisors (1).

29221081 is an equidigital number, since it uses as much as digits as its factorization.

29221081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 29221081 is about 5405.6526895464. The cubic root of 29221081 is about 308.0104321254.

The spelling of 29221081 in words is "twenty-nine million, two hundred twenty-one thousand, eighty-one".