1213110302111 has 4 divisors (see below), whose sum is σ = 1228466128800. Its totient is φ = 1197754475424.

The previous prime is 1213110302057. The next prime is 1213110302123. The reversal of 1213110302111 is 1112030113121.

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

It is not a de Polignac number, because 1213110302111 - 2³⁴ = 1195930432927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213110302111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213110302011) 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, 7677913226 + ... + 7677913383.

It is an arithmetic number, because the mean of its divisors is an integer number (307116532200).

Almost surely, 2^{1213110302111} is an apocalyptic number.

1213110302111 is a deficient number, since it is larger than the sum of its proper divisors (15355826689).

1213110302111 is an equidigital number, since it uses as much as digits as its factorization.

1213110302111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15355826688.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1213110302111 its reverse (1112030113121), we get a palindrome (2325140415232).

The spelling of 1213110302111 in words is "one trillion, two hundred thirteen billion, one hundred ten million, three hundred two thousand, one hundred eleven".