299021427621 has 24 divisors (see below), whose sum is σ = 493643055360. Its totient is φ = 170862332256.

The previous prime is 299021427611. The next prime is 299021427629. The reversal of 299021427621 is 126724120992.

299021427621 is a `hidden beast` number, since 2 + 9 + 9 + 0 + 2 + 14 + 2 + 7 + 621 = 666.

It is not a de Polignac number, because 299021427621 - 2¹⁰ = 299021426597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299021427629) 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 23 ways as a sum of consecutive naturals, for example, 1699636 + ... + 1867298.

It is an arithmetic number, because the mean of its divisors is an integer number (20568460640).

Almost surely, 2^299021427621 is an apocalyptic number.

299021427621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

299021427621 is a deficient number, since it is larger than the sum of its proper divisors (194621627739).

299021427621 is a wasteful number, since it uses less digits than its factorization.

299021427621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195985 (or 195982 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 299021427621 in words is "two hundred ninety-nine billion, twenty-one million, four hundred twenty-seven thousand, six hundred twenty-one".