21102340125413 has 16 divisors (see below), whose sum is σ = 22091457024000. Its totient is φ = 20119196716080.

The previous prime is 21102340125403. The next prime is 21102340125431. The reversal of 21102340125413 is 31452104320112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21102340125413 - 2¹⁴ = 21102340109029 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 (21102340125403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340444658 + ... + 340506636.

It is an arithmetic number, because the mean of its divisors is an integer number (1380716064000).

Almost surely, 2^{21102340125413} is an apocalyptic number.

21102340125413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21102340125413 is a deficient number, since it is larger than the sum of its proper divisors (989116898587).

21102340125413 is a wasteful number, since it uses less digits than its factorization.

21102340125413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109912.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21102340125413 its reverse (31452104320112), we get a palindrome (52554444445525).

The spelling of 21102340125413 in words is "twenty-one trillion, one hundred two billion, three hundred forty million, one hundred twenty-five thousand, four hundred thirteen".