1223211031110 has 48 divisors (see below), whose sum is σ = 3180502175760. Its totient is φ = 326173865280.

The previous prime is 1223211031079. The next prime is 1223211031111. The reversal of 1223211031110 is 111301123221.

1223211031110 is a `hidden beast` number, since 1 + 2 + 232 + 110 + 311 + 10 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223211031111) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 1610440 + ... + 2244980.

It is an arithmetic number, because the mean of its divisors is an integer number (66260461995).

Almost surely, 2^{1223211031110} is an apocalyptic number.

1223211031110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223211031110 is an abundant number, since it is smaller than the sum of its proper divisors (1957291144650).

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

1223211031110 is a wasteful number, since it uses less digits than its factorization.

1223211031110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655973 (or 655970 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1223211031110 its reverse (111301123221), we get a palindrome (1334512154331).

The spelling of 1223211031110 in words is "one trillion, two hundred twenty-three billion, two hundred eleven million, thirty-one thousand, one hundred ten".