111311322122021 has 8 divisors (see below), whose sum is σ = 128214616258560. Its totient is φ = 94658447158128.

The previous prime is 111311322122009. The next prime is 111311322122129. The reversal of 111311322122021 is 120221223113111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111311322122021 - 2⁶ = 111311322121957 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 (111311322122321) 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, 62604792206 + ... + 62604793983.

It is an arithmetic number, because the mean of its divisors is an integer number (16026827032320).

Almost surely, 2^{111311322122021} is an apocalyptic number.

It is an amenable number.

111311322122021 is a deficient number, since it is larger than the sum of its proper divisors (16903294136539).

111311322122021 is a wasteful number, since it uses less digits than its factorization.

111311322122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125209586323.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 111311322122021 its reverse (120221223113111), we get a palindrome (231532545235132).

The spelling of 111311322122021 in words is "one hundred eleven trillion, three hundred eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, twenty-one".