111222021202021 has 8 divisors (see below), whose sum is σ = 118381061067264. Its totient is φ = 104131488895680.

The previous prime is 111222021202009. The next prime is 111222021202051. The reversal of 111222021202021 is 120202120222111.

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 111222021202021 - 2¹⁵ = 111222021169253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111222021202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222021202051) 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, 17126886375 + ... + 17126892868.

It is an arithmetic number, because the mean of its divisors is an integer number (14797632633408).

Almost surely, 2^{111222021202021} is an apocalyptic number.

It is an amenable number.

111222021202021 is a deficient number, since it is larger than the sum of its proper divisors (7159039865243).

111222021202021 is a wasteful number, since it uses less digits than its factorization.

111222021202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34253779451.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111222021202021 its reverse (120202120222111), we get a palindrome (231424141424132).

The spelling of 111222021202021 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-one million, two hundred two thousand, twenty-one".