21380118107 has 8 divisors (see below), whose sum is σ = 21879316800. Its totient is φ = 20881009800.

The previous prime is 21380118101. The next prime is 21380118139. The reversal of 21380118107 is 70181108312.

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

It is a cyclic number.

It is not a de Polignac number, because 21380118107 - 2¹² = 21380114011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21380118101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806144 + ... + 832242.

It is an arithmetic number, because the mean of its divisors is an integer number (2734914600).

Almost surely, 2^21380118107 is an apocalyptic number.

21380118107 is a deficient number, since it is larger than the sum of its proper divisors (499198693).

21380118107 is a wasteful number, since it uses less digits than its factorization.

21380118107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45193.

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 21380118107 in words is "twenty-one billion, three hundred eighty million, one hundred eighteen thousand, one hundred seven".