10001021112 has 48 divisors (see below), whose sum is σ = 27174387240. Its totient is φ = 3322807488.

The previous prime is 10001021087. The next prime is 10001021117. The reversal of 10001021112 is 21112010001.

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 = 10001021094 and 10001021103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001021117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204123 + ... + 248330.

Almost surely, 2^10001021112 is an apocalyptic number.

10001021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10001021112 is an abundant number, since it is smaller than the sum of its proper divisors (17173366128).

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

10001021112 is a wasteful number, since it uses less digits than its factorization.

10001021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452772 (or 452765 counting only the distinct ones).

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

Adding to 10001021112 its reverse (21112010001), we get a palindrome (31113031113).

The spelling of 10001021112 in words is "ten billion, one million, twenty-one thousand, one hundred twelve".