111121002202021 has 32 divisors (see below), whose sum is σ = 135771580200960. Its totient is φ = 88887080952384.

The previous prime is 111121002201967. The next prime is 111121002202027. The reversal of 111121002202021 is 120202200121111.

It is a cyclic number.

It is not a de Polignac number, because 111121002202021 - 2¹⁹ = 111121001677733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111121002201986 and 111121002202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121002202027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34848295 + ... + 37903108.

It is an arithmetic number, because the mean of its divisors is an integer number (4242861881280).

Almost surely, 2^{111121002202021} is an apocalyptic number.

It is an amenable number.

111121002202021 is a deficient number, since it is larger than the sum of its proper divisors (24650577998939).

111121002202021 is a wasteful number, since it uses less digits than its factorization.

111121002202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72751665.

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

Adding to 111121002202021 its reverse (120202200121111), we get a palindrome (231323202323132).

The spelling of 111121002202021 in words is "one hundred eleven trillion, one hundred twenty-one billion, two million, two hundred two thousand, twenty-one".