111023013122121 has 4 divisors (see below), whose sum is σ = 148030684162832. Its totient is φ = 74015342081412.

The previous prime is 111023013122111. The next prime is 111023013122143. The reversal of 111023013122121 is 121221310320111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111023013122121 - 2¹¹ = 111023013120073 is a prime.

It is a super-2 number, since 2×111023013122121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111023013122111) 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, 18503835520351 + ... + 18503835520356.

It is an arithmetic number, because the mean of its divisors is an integer number (37007671040708).

Almost surely, 2^{111023013122121} is an apocalyptic number.

It is an amenable number.

111023013122121 is a deficient number, since it is larger than the sum of its proper divisors (37007671040711).

111023013122121 is an equidigital number, since it uses as much as digits as its factorization.

111023013122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37007671040710.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 111023013122121 its reverse (121221310320111), we get a palindrome (232244323442232).

The spelling of 111023013122121 in words is "one hundred eleven trillion, twenty-three billion, thirteen million, one hundred twenty-two thousand, one hundred twenty-one".