1111000221021 has 8 divisors (see below), whose sum is σ = 1532414098080. Its totient is φ = 715126578992.

The previous prime is 1111000220989. The next prime is 1111000221031. The reversal of 1111000221021 is 1201220001111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111000221021 - 2⁵ = 1111000220989 is a prime.

It is a super-2 number, since 2×1111000221021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111000220988 and 1111000221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111000221031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6385058655 + ... + 6385058828.

It is an arithmetic number, because the mean of its divisors is an integer number (191551762260).

Almost surely, 2^{1111000221021} is an apocalyptic number.

It is an amenable number.

1111000221021 is a deficient number, since it is larger than the sum of its proper divisors (421413877059).

1111000221021 is a wasteful number, since it uses less digits than its factorization.

1111000221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12770117515.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1111000221021 its reverse (1201220001111), we get a palindrome (2312220222132).

The spelling of 1111000221021 in words is "one trillion, one hundred eleven billion, two hundred twenty-one thousand, twenty-one".