29229812121 has 16 divisors (see below), whose sum is σ = 41271043968. Its totient is φ = 18337862400.

The previous prime is 29229812111. The next prime is 29229812123. The reversal of 29229812121 is 12121892292.

It is not a de Polignac number, because 29229812121 - 2⁶ = 29229812057 is a prime.

It is a super-3 number, since 3×29229812121³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29229812121.

It is not an unprimeable number, because it can be changed into a prime (29229812123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404236 + ... + 471026.

It is an arithmetic number, because the mean of its divisors is an integer number (2579440248).

Almost surely, 2^29229812121 is an apocalyptic number.

It is an amenable number.

29229812121 is a deficient number, since it is larger than the sum of its proper divisors (12041231847).

29229812121 is a wasteful number, since it uses less digits than its factorization.

29229812121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75392.

The product of its digits is 20736, while the sum is 39.

The spelling of 29229812121 in words is "twenty-nine billion, two hundred twenty-nine million, eight hundred twelve thousand, one hundred twenty-one".