29121107 has 4 divisors (see below), whose sum is σ = 29215056. Its totient is φ = 29027160.

The previous prime is 29121101. The next prime is 29121137. The reversal of 29121107 is 70112192.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29121107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29121101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46508 + ... + 47129.

It is an arithmetic number, because the mean of its divisors is an integer number (7303764).

Almost surely, 2^29121107 is an apocalyptic number.

29121107 is a deficient number, since it is larger than the sum of its proper divisors (93949).

29121107 is an equidigital number, since it uses as much as digits as its factorization.

29121107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93948.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 29121107 is about 5396.3975946922. The cubic root of 29121107 is about 307.6587657010.

Adding to 29121107 its reverse (70112192), we get a palindrome (99233299).

The spelling of 29121107 in words is "twenty-nine million, one hundred twenty-one thousand, one hundred seven".