21031003010112 has 224 divisors, whose sum is σ = 56629293091200. Its totient is φ = 6887339999232.

The previous prime is 21031003010081. The next prime is 21031003010189. The reversal of 21031003010112 is 21101030013012.

It is a happy number.

It is a super-2 number, since 2×21031003010112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21031003010091 and 21031003010100.

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, 5912565838 + ... + 5912569394.

Almost surely, 2^{21031003010112} 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 21031003010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28314646545600).

21031003010112 is an abundant number, since it is smaller than the sum of its proper divisors (35598290081088).

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

21031003010112 is a wasteful number, since it uses less digits than its factorization.

21031003010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773 (or 5763 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21031003010112 its reverse (21101030013012), we get a palindrome (42132033023124).

The spelling of 21031003010112 in words is "twenty-one trillion, thirty-one billion, three million, ten thousand, one hundred twelve".