121112121122 has 4 divisors (see below), whose sum is σ = 181668181686. Its totient is φ = 60556060560.

The previous prime is 121112121049. The next prime is 121112121139. The reversal of 121112121122 is 221121211121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119521626961 + 1590494161 = 345719^2 + 39881^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121112121122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30278030279 + ... + 30278030282.

Almost surely, 2^121112121122 is an apocalyptic number.

121112121122 is a deficient number, since it is larger than the sum of its proper divisors (60556060564).

121112121122 is an equidigital number, since it uses as much as digits as its factorization.

121112121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60556060563.

The product of its digits is 32, while the sum is 17.

Adding to 121112121122 its reverse (221121211121), we get a palindrome (342233332243).

The spelling of 121112121122 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".