113121211222 has 4 divisors (see below), whose sum is σ = 169681816836. Its totient is φ = 56560605610.

The previous prime is 113121211169. The next prime is 113121211241. The reversal of 113121211222 is 222112121311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222112121311 = 448939 ⋅494749.

It is a self number, because there is not a number n which added to its sum of digits gives 113121211222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28280302804 + ... + 28280302807.

It is an arithmetic number, because the mean of its divisors is an integer number (42420454209).

Almost surely, 2^113121211222 is an apocalyptic number.

113121211222 is a deficient number, since it is larger than the sum of its proper divisors (56560605614).

113121211222 is an equidigital number, since it uses as much as digits as its factorization.

113121211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56560605613.

The product of its digits is 96, while the sum is 19.

Adding to 113121211222 its reverse (222112121311), we get a palindrome (335233332533).

The spelling of 113121211222 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".