12200156035421 has 4 divisors (see below), whose sum is σ = 12200715158844. Its totient is φ = 12199596912000.

The previous prime is 12200156035381. The next prime is 12200156035427. The reversal of 12200156035421 is 12453065100221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2268292027225 + 9931864008196 = 1506085^2 + 3151486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200156035421 - 2¹⁸ = 12200155773277 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 (12200156035427) 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, 279528980 + ... + 279572621.

It is an arithmetic number, because the mean of its divisors is an integer number (3050178789711).

Almost surely, 2^{12200156035421} is an apocalyptic number.

It is an amenable number.

12200156035421 is a deficient number, since it is larger than the sum of its proper divisors (559123423).

12200156035421 is an equidigital number, since it uses as much as digits as its factorization.

12200156035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559123422.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 12200156035421 in words is "twelve trillion, two hundred billion, one hundred fifty-six million, thirty-five thousand, four hundred twenty-one".