12203021291 has 2 divisors, whose sum is σ = 12203021292. Its totient is φ = 12203021290.

The previous prime is 12203021251. The next prime is 12203021317. The reversal of 12203021291 is 19212030221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12203021291 is a prime.

It is not a weakly prime, because it can be changed into another prime (12203021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101510645 + 6101510646.

It is an arithmetic number, because the mean of its divisors is an integer number (6101510646).

Almost surely, 2^12203021291 is an apocalyptic number.

12203021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12203021291 is an equidigital number, since it uses as much as digits as its factorization.

12203021291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 12203021291 in words is "twelve billion, two hundred three million, twenty-one thousand, two hundred ninety-one".