21300023124340 has 24 divisors (see below), whose sum is σ = 46172953354752. Its totient is φ = 8245170241440.

The previous prime is 21300023124329. The next prime is 21300023124389. The reversal of 21300023124340 is 4342132000312.

It is a super-3 number, since 3×21300023124340³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17177437384 + ... + 17177438623.

It is an arithmetic number, because the mean of its divisors is an integer number (1923873056448).

Almost surely, 2^{21300023124340} is an apocalyptic number.

21300023124340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300023124340 is an abundant number, since it is smaller than the sum of its proper divisors (24872930230412).

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

21300023124340 is a wasteful number, since it uses less digits than its factorization.

21300023124340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34354876047 (or 34354876045 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21300023124340 its reverse (4342132000312), we get a palindrome (25642155124652).

The spelling of 21300023124340 in words is "twenty-one trillion, three hundred billion, twenty-three million, one hundred twenty-four thousand, three hundred forty".