1223131122 has 24 divisors (see below), whose sum is σ = 2765340864. Its totient is φ = 389983704.

The previous prime is 1223131081. The next prime is 1223131127. The reversal of 1223131122 is 2211313221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1223131095 and 1223131104.

It is not an unprimeable number, because it can be changed into a prime (1223131127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1476798 + ... + 1477625.

It is an arithmetic number, because the mean of its divisors is an integer number (115222536).

Almost surely, 2^1223131122 is an apocalyptic number.

1223131122 is an abundant number, since it is smaller than the sum of its proper divisors (1542209742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223131122 is a wasteful number, since it uses less digits than its factorization.

1223131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954454 (or 2954451 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1223131122 is about 34973.2915522689. The cubic root of 1223131122 is about 1069.4430740788.

Adding to 1223131122 its reverse (2211313221), we get a palindrome (3434444343).

The spelling of 1223131122 in words is "one billion, two hundred twenty-three million, one hundred thirty-one thousand, one hundred twenty-two".