12203311440421 has 4 divisors (see below), whose sum is σ = 12207550176000. Its totient is φ = 12199072704844.

The previous prime is 12203311440413. The next prime is 12203311440433. The reversal of 12203311440421 is 12404411330221.

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.

It is a cyclic number.

It is not a de Polignac number, because 12203311440421 - 2³ = 12203311440413 is a prime.

It is a super-2 number, since 2×12203311440421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12203311440421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203311440521) 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, 2119363471 + ... + 2119369228.

It is an arithmetic number, because the mean of its divisors is an integer number (3051887544000).

Almost surely, 2^{12203311440421} is an apocalyptic number.

It is an amenable number.

12203311440421 is a deficient number, since it is larger than the sum of its proper divisors (4238735579).

12203311440421 is an equidigital number, since it uses as much as digits as its factorization.

12203311440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238735578.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 12203311440421 its reverse (12404411330221), we get a palindrome (24607722770642).

The spelling of 12203311440421 in words is "twelve trillion, two hundred three billion, three hundred eleven million, four hundred forty thousand, four hundred twenty-one".