111023020310021 has 8 divisors (see below), whose sum is σ = 111432910585080. Its totient is φ = 110613195396288.

The previous prime is 111023020309987. The next prime is 111023020310023. The reversal of 111023020310021 is 120013020320111.

It can be written as a sum of positive squares in 4 ways, for example, as 6135722207521 + 104887298102500 = 2477039^2 + 10241450^2 .

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 111023020310021 - 2²² = 111023016115717 is a prime.

It is a super-2 number, since 2×111023020310021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023020310023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12935546 + ... + 19732571.

It is an arithmetic number, because the mean of its divisors is an integer number (13929113823135).

Almost surely, 2^{111023020310021} is an apocalyptic number.

It is an amenable number.

111023020310021 is a deficient number, since it is larger than the sum of its proper divisors (409890275059).

111023020310021 is a wasteful number, since it uses less digits than its factorization.

111023020310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32680663.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111023020310021 its reverse (120013020320111), we get a palindrome (231036040630132).

The spelling of 111023020310021 in words is "one hundred eleven trillion, twenty-three billion, twenty million, three hundred ten thousand, twenty-one".