21107398469712 has 160 divisors (see below), whose sum is σ = 57215286558720. Its totient is φ = 6692414615040.

The previous prime is 21107398469683. The next prime is 21107398469723. The reversal of 21107398469712 is 21796489370112.

It is a super-3 number, since 3×21107398469712³ (a number of 41 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

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, 697312114 + ... + 697342382.

It is an arithmetic number, because the mean of its divisors is an integer number (357595540992).

Almost surely, 2^{21107398469712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21107398469712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28607643279360).

21107398469712 is an abundant number, since it is smaller than the sum of its proper divisors (36107888089008).

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

21107398469712 is a wasteful number, since it uses less digits than its factorization.

21107398469712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33801 (or 33795 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 21107398469712 in words is "twenty-one trillion, one hundred seven billion, three hundred ninety-eight million, four hundred sixty-nine thousand, seven hundred twelve".