231203222111222 has 16 divisors (see below), whose sum is σ = 346957485516720. Its totient is φ = 115550728192032.

The previous prime is 231203222111137. The next prime is 231203222111233. The reversal of 231203222111222 is 222111222302132.

It is a super-2 number, since 2×231203222111222² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231203222111191 and 231203222111200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435036368 + ... + 435567500.

It is an arithmetic number, because the mean of its divisors is an integer number (21684842844795).

Almost surely, 2^{231203222111222} is an apocalyptic number.

231203222111222 is a deficient number, since it is larger than the sum of its proper divisors (115754263405498).

231203222111222 is a wasteful number, since it uses less digits than its factorization.

231203222111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626527.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 231203222111222 its reverse (222111222302132), we get a palindrome (453314444413354).

The spelling of 231203222111222 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".