1111200202021 has 32 divisors (see below), whose sum is σ = 1440102809600. Its totient is φ = 832633940160.

The previous prime is 1111200201989. The next prime is 1111200202027. The reversal of 1111200202021 is 1202020021111.

It is a cyclic number.

It is not a de Polignac number, because 1111200202021 - 2⁵ = 1111200201989 is a prime.

It is a super-2 number, since 2×1111200202021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1111200201992 and 1111200202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111200202027) 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 31 ways as a sum of consecutive naturals, for example, 5028700 + ... + 5245018.

It is an arithmetic number, because the mean of its divisors is an integer number (45003212800).

Almost surely, 2^{1111200202021} is an apocalyptic number.

It is an amenable number.

1111200202021 is a deficient number, since it is larger than the sum of its proper divisors (328902607579).

1111200202021 is a wasteful number, since it uses less digits than its factorization.

1111200202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219329.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1111200202021 its reverse (1202020021111), we get a palindrome (2313220223132).

The spelling of 1111200202021 in words is "one trillion, one hundred eleven billion, two hundred million, two hundred two thousand, twenty-one".