1201221122 has 16 divisors (see below), whose sum is σ = 1973610360. Its totient is φ = 545787648.

The previous prime is 1201221107. The next prime is 1201221127. The reversal of 1201221122 is 2211221021.

It can be written as a sum of positive squares in 4 ways, for example, as 1098988801 + 102232321 = 33151^2 + 10111^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201221097 and 1201221106.

It is not an unprimeable number, because it can be changed into a prime (1201221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608153 + ... + 610124.

Almost surely, 2^1201221122 is an apocalyptic number.

1201221122 is a deficient number, since it is larger than the sum of its proper divisors (772389238).

1201221122 is a wasteful number, since it uses less digits than its factorization.

1201221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218325.

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

The square root of 1201221122 is about 34658.6370476394. The cubic root of 1201221122 is about 1063.0189013624.

Adding to 1201221122 its reverse (2211221021), we get a palindrome (3412442143).

The spelling of 1201221122 in words is "one billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-two".