10112200021 has 18 divisors (see below), whose sum is σ = 12929774550. Its totient is φ = 7879631760.

The previous prime is 10112200019. The next prime is 10112200057. The reversal of 10112200021 is 12000221101.

It can be written as a sum of positive squares in only one way, i.e., 7410799396 + 2701400625 = 86086^2 + 51975^2 .

It is not a de Polignac number, because 10112200021 - 2¹ = 10112200019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10112199980 and 10112200007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112200001) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 846846 + ... + 858703.

Almost surely, 2^10112200021 is an apocalyptic number.

10112200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10112200021 is a deficient number, since it is larger than the sum of its proper divisors (2817574529).

10112200021 is a wasteful number, since it uses less digits than its factorization.

10112200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705585 (or 1705567 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10112200021 its reverse (12000221101), we get a palindrome (22112421122).

The spelling of 10112200021 in words is "ten billion, one hundred twelve million, two hundred thousand, twenty-one".