1213111303101 has 32 divisors (see below), whose sum is σ = 1824117408000. Its totient is φ = 796709390400.

The previous prime is 1213111303073. The next prime is 1213111303109. The reversal of 1213111303101 is 1013031113121.

1213111303101 is a `hidden beast` number, since 1 + 213 + 11 + 130 + 310 + 1 = 666.

It is not a de Polignac number, because 1213111303101 - 2⁶ = 1213111303037 is a prime.

It is a super-2 number, since 2×1213111303101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213111303109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575046 + ... + 1660391.

It is an arithmetic number, because the mean of its divisors is an integer number (57003669000).

Almost surely, 2^{1213111303101} is an apocalyptic number.

It is an amenable number.

1213111303101 is a deficient number, since it is larger than the sum of its proper divisors (611006104899).

1213111303101 is a wasteful number, since it uses less digits than its factorization.

1213111303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235746 (or 2235740 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1213111303101 its reverse (1013031113121), we get a palindrome (2226142416222).

The spelling of 1213111303101 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, three hundred three thousand, one hundred one".