111102122021 has 8 divisors (see below), whose sum is σ = 122862621504. Its totient is φ = 99618340320.

The previous prime is 111102122011. The next prime is 111102122057. The reversal of 111102122021 is 120221201111.

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 111102122021 - 2¹⁴ = 111102105637 is a prime.

It is a super-3 number, since 3×111102122021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111102121987 and 111102122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102122011) 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, 69178601 + ... + 69180206.

It is an arithmetic number, because the mean of its divisors is an integer number (15357827688).

Almost surely, 2^111102122021 is an apocalyptic number.

111102122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111102122021 is a deficient number, since it is larger than the sum of its proper divisors (11760499483).

111102122021 is a wasteful number, since it uses less digits than its factorization.

111102122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138358891.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111102122021 its reverse (120221201111), we get a palindrome (231323323132).

The spelling of 111102122021 in words is "one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, twenty-one".