11111212202013 has 48 divisors (see below), whose sum is σ = 20029440038400. Its totient is φ = 5766393486240.

The previous prime is 11111212201951. The next prime is 11111212202021. The reversal of 11111212202013 is 31020221211111.

It is a happy number.

11111212202013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111212202013 - 2⁶ = 11111212201949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111212202113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7161103 + ... + 8573436.

It is an arithmetic number, because the mean of its divisors is an integer number (417280000800).

Almost surely, 2^{11111212202013} is an apocalyptic number.

It is an amenable number.

11111212202013 is a deficient number, since it is larger than the sum of its proper divisors (8918227836387).

11111212202013 is a wasteful number, since it uses less digits than its factorization.

11111212202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15735582 (or 15735579 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11111212202013 its reverse (31020221211111), we get a palindrome (42131433413124).

The spelling of 11111212202013 in words is "eleven trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, thirteen".