1211120122 has 4 divisors (see below), whose sum is σ = 1816680186. Its totient is φ = 605560060.

The previous prime is 1211120093. The next prime is 1211120123. The reversal of 1211120122 is 2210211121.

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., 930189001 + 280931121 = 30499^2 + 16761^2 .

It is not an unprimeable number, because it can be changed into a prime (1211120123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302780029 + ... + 302780032.

Almost surely, 2^1211120122 is an apocalyptic number.

1211120122 is a deficient number, since it is larger than the sum of its proper divisors (605560064).

1211120122 is an equidigital number, since it uses as much as digits as its factorization.

1211120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605560063.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1211120122 is about 34801.1511591212. The cubic root of 1211120122 is about 1065.9309520237.

Adding to 1211120122 its reverse (2210211121), we get a palindrome (3421331243).

Subtracting 1211120122 from its reverse (2210211121), we obtain a palindrome (999090999).

The spelling of 1211120122 in words is "one billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-two".