21001331302934 has 8 divisors (see below), whose sum is σ = 31900756409760. Its totient is φ = 10367745833016.

The previous prime is 21001331302933. The next prime is 21001331303011. The reversal of 21001331302934 is 43920313310012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21001331302934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001331302933) 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, 66459909029 + ... + 66459909344.

It is an arithmetic number, because the mean of its divisors is an integer number (3987594551220).

Almost surely, 2^{21001331302934} is an apocalyptic number.

21001331302934 is a deficient number, since it is larger than the sum of its proper divisors (10899425106826).

21001331302934 is a wasteful number, since it uses less digits than its factorization.

21001331302934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132919818454.

The product of its (nonzero) digits is 11664, while the sum is 32.

Adding to 21001331302934 its reverse (43920313310012), we get a palindrome (64921644612946).

The spelling of 21001331302934 in words is "twenty-one trillion, one billion, three hundred thirty-one million, three hundred two thousand, nine hundred thirty-four".