1201211822 has 16 divisors (see below), whose sum is σ = 1837216080. Its totient is φ = 588823872.

The previous prime is 1201211821. The next prime is 1201211873. The reversal of 1201211822 is 2281121021.

It is a junction number, because it is equal to n+sod(n) for n = 1201211794 and 1201211803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201211821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167033 + ... + 174075.

It is an arithmetic number, because the mean of its divisors is an integer number (114826005).

Almost surely, 2^1201211822 is an apocalyptic number.

1201211822 is a deficient number, since it is larger than the sum of its proper divisors (636004258).

1201211822 is a wasteful number, since it uses less digits than its factorization.

1201211822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8707.

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

The square root of 1201211822 is about 34658.5028816884. The cubic root of 1201211822 is about 1063.0161580148.

Adding to 1201211822 its reverse (2281121021), we get a palindrome (3482332843).

The spelling of 1201211822 in words is "one billion, two hundred one million, two hundred eleven thousand, eight hundred twenty-two".