111314211100021 has 4 divisors (see below), whose sum is σ = 111319744460652. Its totient is φ = 111308677739392.

The previous prime is 111314211099991. The next prime is 111314211100033. The reversal of 111314211100021 is 120001112413111.

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 57043201763025 + 54271009336996 = 7552695^2 + 7366886^2 .

It is a cyclic number.

It is not a de Polignac number, because 111314211100021 - 2⁵ = 111314211099989 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 (111314211100061) 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, 2766650140 + ... + 2766690373.

It is an arithmetic number, because the mean of its divisors is an integer number (27829936115163).

Almost surely, 2^{111314211100021} is an apocalyptic number.

It is an amenable number.

111314211100021 is a deficient number, since it is larger than the sum of its proper divisors (5533360631).

111314211100021 is an equidigital number, since it uses as much as digits as its factorization.

111314211100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533360630.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 111314211100021 its reverse (120001112413111), we get a palindrome (231315323513132).

The spelling of 111314211100021 in words is "one hundred eleven trillion, three hundred fourteen billion, two hundred eleven million, one hundred thousand, twenty-one".