1223210112011 has 4 divisors (see below), whose sum is σ = 1231419576000. Its totient is φ = 1215000648024.

The previous prime is 1223210111993. The next prime is 1223210112037. The reversal of 1223210112011 is 1102110123221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223210112011 - 2⁶ = 1223210111947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223210112511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4104731771 + ... + 4104732068.

It is an arithmetic number, because the mean of its divisors is an integer number (307854894000).

Almost surely, 2^{1223210112011} is an apocalyptic number.

1223210112011 is a deficient number, since it is larger than the sum of its proper divisors (8209463989).

1223210112011 is an equidigital number, since it uses as much as digits as its factorization.

1223210112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8209463988.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1223210112011 its reverse (1102110123221), we get a palindrome (2325320235232).

The spelling of 1223210112011 in words is "one trillion, two hundred twenty-three billion, two hundred ten million, one hundred twelve thousand, eleven".