1213322303111 has 4 divisors (see below), whose sum is σ = 1284694203312. Its totient is φ = 1141950402912.

The previous prime is 1213322303087. The next prime is 1213322303113. The reversal of 1213322303111 is 1113032233121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213322303111 is a prime.

It is a super-2 number, since 2×1213322303111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213322303113) 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, 35685950075 + ... + 35685950108.

It is an arithmetic number, because the mean of its divisors is an integer number (321173550828).

Almost surely, 2^{1213322303111} is an apocalyptic number.

1213322303111 is a deficient number, since it is larger than the sum of its proper divisors (71371900201).

1213322303111 is an equidigital number, since it uses as much as digits as its factorization.

1213322303111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71371900200.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1213322303111 its reverse (1113032233121), we get a palindrome (2326354536232).

The spelling of 1213322303111 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, three hundred three thousand, one hundred eleven".