21013034034030 has 64 divisors (see below), whose sum is σ = 50625521717760. Its totient is φ = 5581895613056.

The previous prime is 21013034034029. The next prime is 21013034034067. The reversal of 21013034034030 is 3043043031012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199004029 + ... + 199109591.

It is an arithmetic number, because the mean of its divisors is an integer number (791023776840).

Almost surely, 2^{21013034034030} is an apocalyptic number.

21013034034030 is an abundant number, since it is smaller than the sum of its proper divisors (29612487683730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21013034034030 is a wasteful number, since it uses less digits than its factorization.

21013034034030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131065.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21013034034030 its reverse (3043043031012), we get a palindrome (24056077065042).

The spelling of 21013034034030 in words is "twenty-one trillion, thirteen billion, thirty-four million, thirty-four thousand, thirty".