1213201211013 has 12 divisors (see below), whose sum is σ = 1911710999328. Its totient is φ = 735273461160.

The previous prime is 1213201210973. The next prime is 1213201211021. The reversal of 1213201211013 is 3101121023121.

1213201211013 is a `hidden beast` number, since 121 + 320 + 1 + 211 + 0 + 13 = 666.

It is not a de Polignac number, because 1213201211013 - 2²² = 1213197016709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213201211813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6127278745 + ... + 6127278942.

It is an arithmetic number, because the mean of its divisors is an integer number (159309249944).

Almost surely, 2^{1213201211013} is an apocalyptic number.

It is an amenable number.

1213201211013 is a deficient number, since it is larger than the sum of its proper divisors (698509788315).

1213201211013 is a wasteful number, since it uses less digits than its factorization.

1213201211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12254557704 (or 12254557701 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1213201211013 its reverse (3101121023121), we get a palindrome (4314322234134).

The spelling of 1213201211013 in words is "one trillion, two hundred thirteen billion, two hundred one million, two hundred eleven thousand, thirteen".