1000021122112 has 28 divisors (see below), whose sum is σ = 1984514424156. Its totient is φ = 499985991680.

The previous prime is 1000021122073. The next prime is 1000021122119. The reversal of 1000021122112 is 2112211200001.

1000021122112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 357240508416 + 642780613696 = 597696^2 + 801736^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000021122092 and 1000021122101.

It is not an unprimeable number, because it can be changed into a prime (1000021122119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965508 + ... + 1712380.

Almost surely, 2^{1000021122112} is an apocalyptic number.

It is an amenable number.

1000021122112 is a deficient number, since it is larger than the sum of its proper divisors (984493302044).

1000021122112 is an equidigital number, since it uses as much as digits as its factorization.

1000021122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767806 (or 767796 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000021122112 its reverse (2112211200001), we get a palindrome (3112232322113).

The spelling of 1000021122112 in words is "one trillion, twenty-one million, one hundred twenty-two thousand, one hundred twelve".