111022021021 has 8 divisors (see below), whose sum is σ = 111142386720. Its totient is φ = 110901706608.

The previous prime is 111022021009. The next prime is 111022021069. The reversal of 111022021021 is 120120220111.

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 111022021021 - 2⁹ = 111022020509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022020992 and 111022021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022021001) 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, 5578330 + ... + 5598196.

It is an arithmetic number, because the mean of its divisors is an integer number (13892798340).

Almost surely, 2^111022021021 is an apocalyptic number.

It is an amenable number.

111022021021 is a deficient number, since it is larger than the sum of its proper divisors (120365699).

111022021021 is a wasteful number, since it uses less digits than its factorization.

111022021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25643.

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

Adding to 111022021021 its reverse (120120220111), we get a palindrome (231142241132).

The spelling of 111022021021 in words is "one hundred eleven billion, twenty-two million, twenty-one thousand, twenty-one".