1213031201103 has 24 divisors (see below), whose sum is σ = 1812634780320. Its totient is φ = 780776095680.

The previous prime is 1213031201099. The next prime is 1213031201147. The reversal of 1213031201103 is 3011021303121.

It is not a de Polignac number, because 1213031201103 - 2² = 1213031201099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213031201903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10954150 + ... + 11064332.

It is an arithmetic number, because the mean of its divisors is an integer number (75526449180).

Almost surely, 2^{1213031201103} is an apocalyptic number.

1213031201103 is a deficient number, since it is larger than the sum of its proper divisors (599603579217).

1213031201103 is a wasteful number, since it uses less digits than its factorization.

1213031201103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152399 (or 152396 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1213031201103 its reverse (3011021303121), we get a palindrome (4224052504224).

The spelling of 1213031201103 in words is "one trillion, two hundred thirteen billion, thirty-one million, two hundred one thousand, one hundred three".