11111221202013 has 12 divisors (see below), whose sum is σ = 16051161885408. Its totient is φ = 7406733040200.

The previous prime is 11111221201987. The next prime is 11111221202063. The reversal of 11111221202013 is 31020212211111.

It is a happy number.

It is not a de Polignac number, because 11111221202013 - 2¹² = 11111221197917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111221202063) 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, 62219313 + ... + 62397638.

It is an arithmetic number, because the mean of its divisors is an integer number (1337596823784).

Almost surely, 2^{11111221202013} is an apocalyptic number.

It is an amenable number.

11111221202013 is a deficient number, since it is larger than the sum of its proper divisors (4939940683395).

11111221202013 is a wasteful number, since it uses less digits than its factorization.

11111221202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124626864 (or 124626861 counting only the distinct ones).

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

Adding to 11111221202013 its reverse (31020212211111), we get a palindrome (42131433413124).

The spelling of 11111221202013 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, thirteen".