1201221022 has 4 divisors (see below), whose sum is σ = 1801831536. Its totient is φ = 600610510.

The previous prime is 1201221019. The next prime is 1201221029. The reversal of 1201221022 is 2201221021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2201221021 = 1459 ⋅1508719.

It is a junction number, because it is equal to n+sod(n) for n = 1201220993 and 1201221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201221029) by changing a digit.

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, 300305254 + ... + 300305257.

It is an arithmetic number, because the mean of its divisors is an integer number (450457884).

Almost surely, 2^1201221022 is an apocalyptic number.

1201221022 is a deficient number, since it is larger than the sum of its proper divisors (600610514).

1201221022 is an equidigital number, since it uses as much as digits as its factorization.

1201221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600610513.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1201221022 is about 34658.6356049975. The cubic root of 1201221022 is about 1063.0188718641.

Adding to 1201221022 its reverse (2201221021), we get a palindrome (3402442043).

Subtracting 1201221022 from its reverse (2201221021), we obtain a palindrome (999999999).

The spelling of 1201221022 in words is "one billion, two hundred one million, two hundred twenty-one thousand, twenty-two".