1111201222021 has 8 divisors (see below), whose sum is σ = 1225839960000. Its totient is φ = 998832558240.

The previous prime is 1111201221973. The next prime is 1111201222063. The reversal of 1111201222021 is 1202221021111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111201222021 - 2⁹ = 1111201221509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111201221986 and 1111201222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201222081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567517521 + ... + 567519478.

It is an arithmetic number, because the mean of its divisors is an integer number (153229995000).

Almost surely, 2^{1111201222021} is an apocalyptic number.

1111201222021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111201222021 is a deficient number, since it is larger than the sum of its proper divisors (114638737979).

1111201222021 is a wasteful number, since it uses less digits than its factorization.

1111201222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135037099.

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

Adding to 1111201222021 its reverse (1202221021111), we get a palindrome (2313422243132).

The spelling of 1111201222021 in words is "one trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, twenty-one".