29013121 has 2 divisors, whose sum is σ = 29013122. Its totient is φ = 29013120.

The previous prime is 29013119. The next prime is 29013163. The reversal of 29013121 is 12131092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 540225 = 5336^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 29013121 - 2¹ = 29013119 is a prime.

It is a super-2 number, since 2×29013121² = 1683522380321282, which contains 22 as substring.

Together with 29013119, it forms a pair of twin primes.

It is equal to p_1800433 and since 29013121 and 1800433 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (29013181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14506560 + 14506561.

It is an arithmetic number, because the mean of its divisors is an integer number (14506561).

Almost surely, 2^29013121 is an apocalyptic number.

It is an amenable number.

29013121 is a deficient number, since it is larger than the sum of its proper divisors (1).

29013121 is an equidigital number, since it uses as much as digits as its factorization.

29013121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 29013121 is about 5386.3829236325. The cubic root of 29013121 is about 307.2780110639.

The spelling of 29013121 in words is "twenty-nine million, thirteen thousand, one hundred twenty-one".