121111122 has 16 divisors (see below), whose sum is σ = 264242592. Its totient is φ = 36700320.

The previous prime is 121111121. The next prime is 121111127. The reversal of 121111122 is 221111121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121111098 and 121111107.

It is not an unprimeable number, because it can be changed into a prime (121111121) 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, 917443 + ... + 917574.

It is an arithmetic number, because the mean of its divisors is an integer number (16515162).

Almost surely, 2^121111122 is an apocalyptic number.

121111122 is an abundant number, since it is smaller than the sum of its proper divisors (143131470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121111122 is a wasteful number, since it uses less digits than its factorization.

121111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835033.

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

The square root of 121111122 is about 11005.0498408685. The cubic root of 121111122 is about 494.7601082270.

Adding to 121111122 its reverse (221111121), we get a palindrome (342222243).

Subtracting 121111122 from its reverse (221111121), we obtain a palindrome (99999999).

The spelling of 121111122 in words is "one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-two".