1111202221021 has 16 divisors (see below), whose sum is σ = 1132681017600. Its totient is φ = 1089911803968.

The previous prime is 1111202220937. The next prime is 1111202221049. The reversal of 1111202221021 is 1201222021111.

It is a cyclic number.

It is not a de Polignac number, because 1111202221021 - 2⁷ = 1111202220893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111202220986 and 1111202221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111202222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93301815 + ... + 93313723.

It is an arithmetic number, because the mean of its divisors is an integer number (70792563600).

Almost surely, 2^{1111202221021} is an apocalyptic number.

It is an amenable number.

1111202221021 is a deficient number, since it is larger than the sum of its proper divisors (21478796579).

1111202221021 is a wasteful number, since it uses less digits than its factorization.

1111202221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19668.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1111202221021 its reverse (1201222021111), we get a palindrome (2312424242132).

The spelling of 1111202221021 in words is "one trillion, one hundred eleven billion, two hundred two million, two hundred twenty-one thousand, twenty-one".