1121221122122 has 4 divisors (see below), whose sum is σ = 1681831683186. Its totient is φ = 560610561060.

The previous prime is 1121221122103. The next prime is 1121221122137. The reversal of 1121221122122 is 2212211221211.

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., 916138036801 + 205083085321 = 957151^2 + 452861^2 .

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 = 1121221122094 and 1121221122103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280305280529 + ... + 280305280532.

Almost surely, 2^{1121221122122} is an apocalyptic number.

1121221122122 is a deficient number, since it is larger than the sum of its proper divisors (560610561064).

1121221122122 is an equidigital number, since it uses as much as digits as its factorization.

1121221122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560610561063.

The product of its digits is 128, while the sum is 20.

Adding to 1121221122122 its reverse (2212211221211), we get a palindrome (3333432343333).

The spelling of 1121221122122 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".