1213133202111 has 4 divisors (see below), whose sum is σ = 1617510936152. Its totient is φ = 808755468072.

The previous prime is 1213133202103. The next prime is 1213133202121. The reversal of 1213133202111 is 1112023313121.

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

It is not a de Polignac number, because 1213133202111 - 2³ = 1213133202103 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 (1213133202121) 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, 202188867016 + ... + 202188867021.

It is an arithmetic number, because the mean of its divisors is an integer number (404377734038).

Almost surely, 2^{1213133202111} is an apocalyptic number.

1213133202111 is a deficient number, since it is larger than the sum of its proper divisors (404377734041).

1213133202111 is an equidigital number, since it uses as much as digits as its factorization.

1213133202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404377734040.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1213133202111 its reverse (1112023313121), we get a palindrome (2325156515232).

The spelling of 1213133202111 in words is "one trillion, two hundred thirteen billion, one hundred thirty-three million, two hundred two thousand, one hundred eleven".