21001020132334 has 12 divisors (see below), whose sum is σ = 34625648896272. Its totient is φ = 9545918241860.

The previous prime is 21001020132289. The next prime is 21001020132341. The reversal of 21001020132334 is 43323102010012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43390537222 + ... + 43390537705.

It is an arithmetic number, because the mean of its divisors is an integer number (2885470741356).

Almost surely, 2^{21001020132334} is an apocalyptic number.

21001020132334 is a deficient number, since it is larger than the sum of its proper divisors (13624628763938).

21001020132334 is a wasteful number, since it uses less digits than its factorization.

21001020132334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86781074951 (or 86781074940 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21001020132334 its reverse (43323102010012), we get a palindrome (64324122142346).

The spelling of 21001020132334 in words is "twenty-one trillion, one billion, twenty million, one hundred thirty-two thousand, three hundred thirty-four".