12222031 has 4 divisors (see below), whose sum is σ = 12940992. Its totient is φ = 11503072.

The previous prime is 12222013. The next prime is 12222047. The reversal of 12222031 is 13022221.

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 12222031 - 2⁹ = 12221519 is a prime.

It is a super-2 number, since 2×12222031² = 298756083529922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222731) 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, 359455 + ... + 359488.

It is an arithmetic number, because the mean of its divisors is an integer number (3235248).

Almost surely, 2^12222031 is an apocalyptic number.

12222031 is a deficient number, since it is larger than the sum of its proper divisors (718961).

12222031 is an equidigital number, since it uses as much as digits as its factorization.

12222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718960.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12222031 is about 3496.0021453083. The cubic root of 12222031 is about 230.3462396973.

Adding to 12222031 its reverse (13022221), we get a palindrome (25244252).

The spelling of 12222031 in words is "twelve million, two hundred twenty-two thousand, thirty-one".