11111221220193 has 64 divisors (see below), whose sum is σ = 17770981132800. Its totient is φ = 6840355737600.

The previous prime is 11111221220171. The next prime is 11111221220237. The reversal of 11111221220193 is 39102212211111.

It is not a de Polignac number, because 11111221220193 - 2⁸ = 11111221219937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11111221220293) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201258993 + ... + 201314193.

It is an arithmetic number, because the mean of its divisors is an integer number (277671580200).

Almost surely, 2^{11111221220193} is an apocalyptic number.

It is an amenable number.

11111221220193 is a deficient number, since it is larger than the sum of its proper divisors (6659759912607).

11111221220193 is a wasteful number, since it uses less digits than its factorization.

11111221220193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66439 (or 66433 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The spelling of 11111221220193 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, one hundred ninety-three".