12010200021 has 16 divisors (see below), whose sum is σ = 17837723200. Its totient is φ = 7986624624.

The previous prime is 12010199917. The next prime is 12010200031. The reversal of 12010200021 is 12000201021.

It is a de Polignac number, because none of the positive numbers 2^k-12010200021 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010199976 and 12010200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010200031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549511 + ... + 570948.

It is an arithmetic number, because the mean of its divisors is an integer number (1114857700).

Almost surely, 2^12010200021 is an apocalyptic number.

It is an amenable number.

12010200021 is a deficient number, since it is larger than the sum of its proper divisors (5827523179).

12010200021 is a wasteful number, since it uses less digits than its factorization.

12010200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120865 (or 1120859 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12010200021 its reverse (12000201021), we get a palindrome (24010401042).

The spelling of 12010200021 in words is "twelve billion, ten million, two hundred thousand, twenty-one".