1223231212 has 24 divisors (see below), whose sum is σ = 2498517504. Its totient is φ = 513087312.

The previous prime is 1223231203. The next prime is 1223231221. The reversal of 1223231212 is 2121323221.

It is an interprime number because it is at equal distance from previous prime (1223231203) and next prime (1223231221).

It is a self number, because there is not a number n which added to its sum of digits gives 1223231212.

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, 463438 + ... + 466069.

It is an arithmetic number, because the mean of its divisors is an integer number (104104896).

Almost surely, 2^1223231212 is an apocalyptic number.

It is an amenable number.

1223231212 is an abundant number, since it is smaller than the sum of its proper divisors (1275286292).

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

1223231212 is a wasteful number, since it uses less digits than its factorization.

1223231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929565 (or 929563 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1223231212 is about 34974.7224720940. The cubic root of 1223231212 is about 1069.4722444693.

Adding to 1223231212 its reverse (2121323221), we get a palindrome (3344554433).

The spelling of 1223231212 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred twelve".