1223113100 has 36 divisors (see below), whose sum is σ = 2895444888. Its totient is φ = 444768000.

The previous prime is 1223113097. The next prime is 1223113109. The reversal of 1223113100 is 13113221.

It is a super-2 number, since 2×1223113100² = 2992011310783220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223113109) 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, 554861 + ... + 557060.

Almost surely, 2^1223113100 is an apocalyptic number.

1223113100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223113100 is an abundant number, since it is smaller than the sum of its proper divisors (1672331788).

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

1223113100 is a wasteful number, since it uses less digits than its factorization.

1223113100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111946 (or 1111939 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1223113100 is about 34973.0338975617. The cubic root of 1223113100 is about 1069.4378215490.

Adding to 1223113100 its reverse (13113221), we get a palindrome (1236226321).

The spelling of 1223113100 in words is "one billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred".