1224213253311 has 4 divisors (see below), whose sum is σ = 1632284337752. Its totient is φ = 816142168872.

The previous prime is 1224213253297. The next prime is 1224213253313. The reversal of 1224213253311 is 1133523124221.

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

It is not a de Polignac number, because 1224213253311 - 2⁵ = 1224213253279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224213253313) 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, 204035542216 + ... + 204035542221.

It is an arithmetic number, because the mean of its divisors is an integer number (408071084438).

Almost surely, 2^{1224213253311} is an apocalyptic number.

1224213253311 is a deficient number, since it is larger than the sum of its proper divisors (408071084441).

1224213253311 is an equidigital number, since it uses as much as digits as its factorization.

1224213253311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408071084440.

The product of its digits is 8640, while the sum is 30.

Adding to 1224213253311 its reverse (1133523124221), we get a palindrome (2357736377532).

The spelling of 1224213253311 in words is "one trillion, two hundred twenty-four billion, two hundred thirteen million, two hundred fifty-three thousand, three hundred eleven".