111020232230021 has 8 divisors (see below), whose sum is σ = 111092238906264. Its totient is φ = 110948236277760.

The previous prime is 111020232230009. The next prime is 111020232230057. The reversal of 111020232230021 is 120032232020111.

It can be written as a sum of positive squares in 4 ways, for example, as 29106618453025 + 81913613776996 = 5395055^2 + 9050614^2 .

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 111020232230021 - 2⁶ = 111020232229957 is a prime.

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 = 111020232229975 and 111020232230002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020232230821) 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, 18082871 + ... + 23431403.

It is an arithmetic number, because the mean of its divisors is an integer number (13886529863283).

Almost surely, 2^{111020232230021} is an apocalyptic number.

It is an amenable number.

111020232230021 is a deficient number, since it is larger than the sum of its proper divisors (72006676243).

111020232230021 is a wasteful number, since it uses less digits than its factorization.

111020232230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361991.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 111020232230021 its reverse (120032232020111), we get a palindrome (231052464250132).

The spelling of 111020232230021 in words is "one hundred eleven trillion, twenty billion, two hundred thirty-two million, two hundred thirty thousand, twenty-one".