1213010201111 has 4 divisors (see below), whose sum is σ = 1213071210000. Its totient is φ = 1212949192224.

The previous prime is 1213010201099. The next prime is 1213010201153. The reversal of 1213010201111 is 1111020103121.

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-1213010201111 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 (1213010201311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30474611 + ... + 30514388.

It is an arithmetic number, because the mean of its divisors is an integer number (303267802500).

Almost surely, 2^{1213010201111} is an apocalyptic number.

1213010201111 is a deficient number, since it is larger than the sum of its proper divisors (61008889).

1213010201111 is an equidigital number, since it uses as much as digits as its factorization.

1213010201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61008888.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1213010201111 its reverse (1111020103121), we get a palindrome (2324030304232).

The spelling of 1213010201111 in words is "one trillion, two hundred thirteen billion, ten million, two hundred one thousand, one hundred eleven".