111020323021 has 2 divisors, whose sum is σ = 111020323022. Its totient is φ = 111020323020.

The previous prime is 111020323013. The next prime is 111020323031. The reversal of 111020323021 is 120323020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80990898921 + 30029424100 = 284589^2 + 173290^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020323021 - 2³ = 111020323013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020322986 and 111020323004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020323031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510161510 + 55510161511.

It is an arithmetic number, because the mean of its divisors is an integer number (55510161511).

Almost surely, 2^111020323021 is an apocalyptic number.

It is an amenable number.

111020323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020323021 is an equidigital number, since it uses as much as digits as its factorization.

111020323021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 111020323021 its reverse (120323020111), we get a palindrome (231343343132).

The spelling of 111020323021 in words is "one hundred eleven billion, twenty million, three hundred twenty-three thousand, twenty-one".