10021001112 has 96 divisors (see below), whose sum is σ = 27464346000. Its totient is φ = 3300605952.

The previous prime is 10021001093. The next prime is 10021001149. The reversal of 10021001112 is 21110012001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10021001094 and 10021001103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3457648 + ... + 3460544.

Almost surely, 2^10021001112 is an apocalyptic number.

10021001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13732173000).

10021001112 is an abundant number, since it is smaller than the sum of its proper divisors (17443344888).

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

10021001112 is a wasteful number, since it uses less digits than its factorization.

10021001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 3458 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10021001112 its reverse (21110012001), we get a palindrome (31131013113).

The spelling of 10021001112 in words is "ten billion, twenty-one million, one thousand, one hundred twelve".