121122 has 16 divisors (see below), whose sum is σ = 269280. Its totient is φ = 40356.

The previous prime is 121081. The next prime is 121123. The reversal of 121122 is 221121.

It is a Harshad number since it is a multiple of its sum of digits (9).

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

It is not an unprimeable number, because it can be changed into a prime (121123) by changing a digit.

121122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068 + ... + 1175.

It is an arithmetic number, because the mean of its divisors is an integer number (16830).

2¹²¹¹²² is an apocalyptic number.

121122 is an abundant number, since it is smaller than the sum of its proper divisors (148158).

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

121122 is a wasteful number, since it uses less digits than its factorization.

121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254 (or 2248 counting only the distinct ones).

The product of its digits is 8, while the sum is 9.

The square root of 121122 is about 348.0258611081. The cubic root of 121122 is about 49.4774920627.

Adding to 121122 its reverse (221121), we get a palindrome (342243).

Subtracting 121122 from its reverse (221121), we obtain a palindrome (99999).

It can be divided in two parts, 121 and 122, that added together give a 5-th power (243 = 3⁵).

The spelling of 121122 in words is "one hundred twenty-one thousand, one hundred twenty-two", and thus it is an iban number.