21002310029 has 4 divisors (see below), whose sum is σ = 21079809600. Its totient is φ = 20924810460.

The previous prime is 21002310011. The next prime is 21002310031. The reversal of 21002310029 is 92001320012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21002310029 - 2⁸ = 21002309773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002310059) 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 3 ways as a sum of consecutive naturals, for example, 38749379 + ... + 38749920.

It is an arithmetic number, because the mean of its divisors is an integer number (5269952400).

Almost surely, 2^21002310029 is an apocalyptic number.

It is an amenable number.

21002310029 is a deficient number, since it is larger than the sum of its proper divisors (77499571).

21002310029 is an equidigital number, since it uses as much as digits as its factorization.

21002310029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77499570.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 21002310029 in words is "twenty-one billion, two million, three hundred ten thousand, twenty-nine".