111311022032101 has 4 divisors (see below), whose sum is σ = 111311559784012. Its totient is φ = 111310484280192.

The previous prime is 111311022032099. The next prime is 111311022032129. The reversal of 111311022032101 is 101230220113111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88159517848900 + 23151504183201 = 9389330^2 + 4811601^2 .

It is a cyclic number.

It is not a de Polignac number, because 111311022032101 - 2¹ = 111311022032099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311022032141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268565346 + ... + 268979491.

It is an arithmetic number, because the mean of its divisors is an integer number (27827889946003).

Almost surely, 2^{111311022032101} is an apocalyptic number.

It is an amenable number.

111311022032101 is a deficient number, since it is larger than the sum of its proper divisors (537751911).

111311022032101 is an equidigital number, since it uses as much as digits as its factorization.

111311022032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537751910.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 111311022032101 its reverse (101230220113111), we get a palindrome (212541242145212).

The spelling of 111311022032101 in words is "one hundred eleven trillion, three hundred eleven billion, twenty-two million, thirty-two thousand, one hundred one".