1123033212 has 72 divisors (see below), whose sum is σ = 3253426176. Its totient is φ = 319965984.

The previous prime is 1123033147. The next prime is 1123033231. The reversal of 1123033212 is 2123303211.

It is a super-2 number, since 2×1123033212² = 2522407190510073888, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86413 + ... + 98555.

Almost surely, 2^1123033212 is an apocalyptic number.

1123033212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123033212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626713088).

1123033212 is an abundant number, since it is smaller than the sum of its proper divisors (2130392964).

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

1123033212 is a wasteful number, since it uses less digits than its factorization.

1123033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12527 (or 12522 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1123033212 is about 33511.6876925051. The cubic root of 1123033212 is about 1039.4354714804.

Adding to 1123033212 its reverse (2123303211), we get a palindrome (3246336423).

The spelling of 1123033212 in words is "one billion, one hundred twenty-three million, thirty-three thousand, two hundred twelve".