111010022121 has 4 divisors (see below), whose sum is σ = 148013362832. Its totient is φ = 74006681412.

The previous prime is 111010022051. The next prime is 111010022131. The reversal of 111010022121 is 121220010111.

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 111010022121 - 2¹¹ = 111010020073 is a prime.

It is a super-2 number, since 2×111010022121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010022097 and 111010022106.

It is not an unprimeable number, because it can be changed into a prime (111010022131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18501670351 + ... + 18501670356.

It is an arithmetic number, because the mean of its divisors is an integer number (37003340708).

Almost surely, 2^111010022121 is an apocalyptic number.

It is an amenable number.

111010022121 is a deficient number, since it is larger than the sum of its proper divisors (37003340711).

111010022121 is an equidigital number, since it uses as much as digits as its factorization.

111010022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37003340710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111010022121 its reverse (121220010111), we get a palindrome (232230032232).

The spelling of 111010022121 in words is "one hundred eleven billion, ten million, twenty-two thousand, one hundred twenty-one".