21322130109018 has 32 divisors (see below), whose sum is σ = 44020166584320. Its totient is φ = 6878061944880.

The previous prime is 21322130109017. The next prime is 21322130109019. The reversal of 21322130109018 is 81090103122312.

It is an interprime number because it is at equal distance from previous prime (21322130109017) and next prime (21322130109019).

It is a self number, because there is not a number n which added to its sum of digits gives 21322130109018.

It is not an unprimeable number, because it can be changed into a prime (21322130109017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40483321 + ... + 41006627.

It is an arithmetic number, because the mean of its divisors is an integer number (1375630205760).

Almost surely, 2^{21322130109018} is an apocalyptic number.

21322130109018 is an abundant number, since it is smaller than the sum of its proper divisors (22698036475302).

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

21322130109018 is a wasteful number, since it uses less digits than its factorization.

21322130109018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742402.

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 21322130109018 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred thirty million, one hundred nine thousand, eighteen".