111101220021023 has 32 divisors (see below), whose sum is σ = 116539657200000. Its totient is φ = 105714849816576.

The previous prime is 111101220021007. The next prime is 111101220021059. The reversal of 111101220021023 is 320120022101111.

It is a happy number.

It is not a de Polignac number, because 111101220021023 - 2⁴ = 111101220021007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101220020992 and 111101220021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111101220821023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10925476283 + ... + 10925486451.

It is an arithmetic number, because the mean of its divisors is an integer number (3641864287500).

Almost surely, 2^{111101220021023} is an apocalyptic number.

111101220021023 is a deficient number, since it is larger than the sum of its proper divisors (5438437178977).

111101220021023 is a wasteful number, since it uses less digits than its factorization.

111101220021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13091.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111101220021023 its reverse (320120022101111), we get a palindrome (431221242122134).

The spelling of 111101220021023 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty million, twenty-one thousand, twenty-three".