12203021311 has 24 divisors (see below), whose sum is σ = 14074878384. Its totient is φ = 10481095680.

The previous prime is 12203021291. The next prime is 12203021317. The reversal of 12203021311 is 11312030221.

It is not a de Polignac number, because 12203021311 - 2¹⁹ = 12202497023 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 (12203021317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1747056 + ... + 1754026.

It is an arithmetic number, because the mean of its divisors is an integer number (586453266).

Almost surely, 2^12203021311 is an apocalyptic number.

12203021311 is a deficient number, since it is larger than the sum of its proper divisors (1871857073).

12203021311 is an equidigital number, since it uses as much as digits as its factorization.

12203021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7179 (or 7090 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12203021311 its reverse (11312030221), we get a palindrome (23515051532).

It can be divided in two parts, 122030 and 21311, that added together give a palindrome (143341).

The spelling of 12203021311 in words is "twelve billion, two hundred three million, twenty-one thousand, three hundred eleven".