1223212312113 has 16 divisors (see below), whose sum is σ = 1788533194752. Its totient is φ = 737459426000.

The previous prime is 1223212312109. The next prime is 1223212312159. The reversal of 1223212312113 is 3112132123221.

It is not a de Polignac number, because 1223212312113 - 2² = 1223212312109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223212312183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97027833 + ... + 97040438.

It is an arithmetic number, because the mean of its divisors is an integer number (111783324672).

Almost surely, 2^{1223212312113} is an apocalyptic number.

It is an amenable number.

1223212312113 is a deficient number, since it is larger than the sum of its proper divisors (565320882639).

1223212312113 is a wasteful number, since it uses less digits than its factorization.

1223212312113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194068476.

The product of its digits is 864, while the sum is 24.

Adding to 1223212312113 its reverse (3112132123221), we get a palindrome (4335344435334).

The spelling of 1223212312113 in words is "one trillion, two hundred twenty-three billion, two hundred twelve million, three hundred twelve thousand, one hundred thirteen".