29921852212257 has 8 divisors (see below), whose sum is σ = 39896025542784. Its totient is φ = 19947790178288.

The previous prime is 29921852212201. The next prime is 29921852212283. The reversal of 29921852212257 is 75221225812992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29921852212257 - 2⁸ = 29921852212001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29921852212197 and 29921852212206.

It is not an unprimeable number, because it can be changed into a prime (29921852222257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27194793 + ... + 28273670.

It is an arithmetic number, because the mean of its divisors is an integer number (4987003192848).

Almost surely, 2^{29921852212257} is an apocalyptic number.

It is an amenable number.

29921852212257 is a deficient number, since it is larger than the sum of its proper divisors (9974173330527).

29921852212257 is a wasteful number, since it uses less digits than its factorization.

29921852212257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55648279.

The product of its digits is 7257600, while the sum is 57.

The spelling of 29921852212257 in words is "twenty-nine trillion, nine hundred twenty-one billion, eight hundred fifty-two million, two hundred twelve thousand, two hundred fifty-seven".