12203121031 has 4 divisors (see below), whose sum is σ = 12462761952. Its totient is φ = 11943480112.

The previous prime is 12203121023. The next prime is 12203121083. The reversal of 12203121031 is 13012130221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13012130221 = 19 ⋅684848959.

It is a cyclic number.

It is not a de Polignac number, because 12203121031 - 2³ = 12203121023 is a prime.

It is a super-2 number, since 2×12203121031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12203120996 and 12203121014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12203121011) 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, 129820390 + ... + 129820483.

It is an arithmetic number, because the mean of its divisors is an integer number (3115690488).

Almost surely, 2^12203121031 is an apocalyptic number.

12203121031 is a deficient number, since it is larger than the sum of its proper divisors (259640921).

12203121031 is an equidigital number, since it uses as much as digits as its factorization.

12203121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259640920.

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

Adding to 12203121031 its reverse (13012130221), we get a palindrome (25215251252).

The spelling of 12203121031 in words is "twelve billion, two hundred three million, one hundred twenty-one thousand, thirty-one".