21030122310012 has 108 divisors (see below), whose sum is σ = 56475248939200. Its totient is φ = 6597124365312.

The previous prime is 21030122310011. The next prime is 21030122310031. The reversal of 21030122310012 is 21001322103012.

21030122310012 is a `hidden beast` number, since 21 + 0 + 301 + 22 + 310 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030122310011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132019989 + ... + 132179187.

Almost surely, 2^{21030122310012} 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 21030122310012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28237624469600).

21030122310012 is an abundant number, since it is smaller than the sum of its proper divisors (35445126629188).

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

21030122310012 is a wasteful number, since it uses less digits than its factorization.

21030122310012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171940 (or 171918 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21030122310012 its reverse (21001322103012), we get a palindrome (42031444413024).

The spelling of 21030122310012 in words is "twenty-one trillion, thirty billion, one hundred twenty-two million, three hundred ten thousand, twelve".