1212120122 has 4 divisors (see below), whose sum is σ = 1818180186. Its totient is φ = 606060060.

The previous prime is 1212120113. The next prime is 1212120137. The reversal of 1212120122 is 2210212121.

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., 788542561 + 423577561 = 28081^2 + 20581^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212120097 and 1212120106.

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, 303030029 + ... + 303030032.

Almost surely, 2^1212120122 is an apocalyptic number.

1212120122 is a deficient number, since it is larger than the sum of its proper divisors (606060064).

1212120122 is an equidigital number, since it uses as much as digits as its factorization.

1212120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606060063.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1212120122 is about 34815.5155354621. The cubic root of 1212120122 is about 1066.2242446250.

Adding to 1212120122 its reverse (2210212121), we get a palindrome (3422332243).

The spelling of 1212120122 in words is "one billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-two".