1111122424221 has 16 divisors (see below), whose sum is σ = 1527998162688. Its totient is φ = 717809576000.

The previous prime is 1111122424189. The next prime is 1111122424259. The reversal of 1111122424221 is 1224242211111.

It is a cyclic number.

It is not a de Polignac number, because 1111122424221 - 2⁵ = 1111122424189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111122424191 and 1111122424200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122424021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38997150 + ... + 39025631.

It is an arithmetic number, because the mean of its divisors is an integer number (95499885168).

Almost surely, 2^{1111122424221} is an apocalyptic number.

It is an amenable number.

1111122424221 is a deficient number, since it is larger than the sum of its proper divisors (416875738467).

1111122424221 is a wasteful number, since it uses less digits than its factorization.

1111122424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78022932.

The product of its digits is 512, while the sum is 24.

Adding to 1111122424221 its reverse (1224242211111), we get a palindrome (2335364635332).

The spelling of 1111122424221 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, four hundred twenty-four thousand, two hundred twenty-one".