111020102021 has 8 divisors (see below), whose sum is σ = 111094739520. Its totient is φ = 110945495808.

The previous prime is 111020102009. The next prime is 111020102023. The reversal of 111020102021 is 120201020111.

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 111020102021 - 2⁶ = 111020101957 is a prime.

It is a super-3 number, since 3×111020102021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020101993 and 111020102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020102023) 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, 13569710 + ... + 13577888.

It is an arithmetic number, because the mean of its divisors is an integer number (13886842440).

Almost surely, 2^111020102021 is an apocalyptic number.

It is an amenable number.

111020102021 is a deficient number, since it is larger than the sum of its proper divisors (74637499).

111020102021 is an equidigital number, since it uses as much as digits as its factorization.

111020102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15643.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111020102021 its reverse (120201020111), we get a palindrome (231221122132).

The spelling of 111020102021 in words is "one hundred eleven billion, twenty million, one hundred two thousand, twenty-one".