12020202231 has 4 divisors (see below), whose sum is σ = 16026936312. Its totient is φ = 8013468152.

The previous prime is 12020202221. The next prime is 12020202263. The reversal of 12020202231 is 13220202021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12020202231 - 2¹⁵ = 12020169463 is a prime.

It is a super-2 number, since 2×12020202231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12020202231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020202221) 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, 2003367036 + ... + 2003367041.

It is an arithmetic number, because the mean of its divisors is an integer number (4006734078).

Almost surely, 2^12020202231 is an apocalyptic number.

12020202231 is a deficient number, since it is larger than the sum of its proper divisors (4006734081).

12020202231 is an equidigital number, since it uses as much as digits as its factorization.

12020202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006734080.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12020202231 its reverse (13220202021), we get a palindrome (25240404252).

The spelling of 12020202231 in words is "twelve billion, twenty million, two hundred two thousand, two hundred thirty-one".