12200735021 has 4 divisors (see below), whose sum is σ = 12407527200. Its totient is φ = 11993942844.

The previous prime is 12200735017. The next prime is 12200735047. The reversal of 12200735021 is 12053700221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12053700221 = 521 ⋅23135701.

It is a cyclic number.

It is not a de Polignac number, because 12200735021 - 2² = 12200735017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200735621) 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, 103396001 + ... + 103396118.

It is an arithmetic number, because the mean of its divisors is an integer number (3101881800).

Almost surely, 2^12200735021 is an apocalyptic number.

It is an amenable number.

12200735021 is a deficient number, since it is larger than the sum of its proper divisors (206792179).

12200735021 is an equidigital number, since it uses as much as digits as its factorization.

12200735021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206792178.

The product of its (nonzero) digits is 840, while the sum is 23.

The spelling of 12200735021 in words is "twelve billion, two hundred million, seven hundred thirty-five thousand, twenty-one".