1201222210 has 32 divisors (see below), whose sum is σ = 2332601712. Its totient is φ = 443688960.

The previous prime is 1201222207. The next prime is 1201222259. The reversal of 1201222210 is 122221021.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1044647041 + 156575169 = 32321^2 + 12513^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57651 + ... + 75670.

Almost surely, 2^1201222210 is an apocalyptic number.

1201222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201222210 is a deficient number, since it is larger than the sum of its proper divisors (1131379502).

1201222210 is a wasteful number, since it uses less digits than its factorization.

1201222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133398.

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

The square root of 1201222210 is about 34658.6527435791. The cubic root of 1201222210 is about 1063.0192223036.

Adding to 1201222210 its reverse (122221021), we get a palindrome (1323443231).

The spelling of 1201222210 in words is "one billion, two hundred one million, two hundred twenty-two thousand, two hundred ten".