1223023212 has 30 divisors (see below), whose sum is σ = 3197225108. Its totient is φ = 407674296.

The previous prime is 1223023201. The next prime is 1223023247. The reversal of 1223023212 is 2123203221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1887058 + ... + 1887705.

Almost surely, 2^1223023212 is an apocalyptic number.

1223023212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223023212 is an abundant number, since it is smaller than the sum of its proper divisors (1974201896).

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

1223023212 is a wasteful number, since it uses less digits than its factorization.

1223023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774779 (or 3774768 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223023212 is about 34971.7487695425. The cubic root of 1223023212 is about 1069.4116228320.

Adding to 1223023212 its reverse (2123203221), we get a palindrome (3346226433).

Subtracting 1223023212 from its reverse (2123203221), we obtain a square (900180009 = 30003²).

The spelling of 1223023212 in words is "one billion, two hundred twenty-three million, twenty-three thousand, two hundred twelve".