1201222011 has 8 divisors (see below), whose sum is σ = 1747232064. Its totient is φ = 728013320.

The previous prime is 1201221961. The next prime is 1201222027. The reversal of 1201222011 is 1102221021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201222011 - 2¹⁰ = 1201220987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201222031) 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 in 7 ways as a sum of consecutive naturals, for example, 18200301 + ... + 18200366.

It is an arithmetic number, because the mean of its divisors is an integer number (218404008).

Almost surely, 2^1201222011 is an apocalyptic number.

1201222011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201222011 is a deficient number, since it is larger than the sum of its proper divisors (546010053).

1201222011 is a wasteful number, since it uses less digits than its factorization.

1201222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36400681.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1201222011 is about 34658.6498727230. The cubic root of 1201222011 is about 1063.0191636021.

Adding to 1201222011 its reverse (1102221021), we get a palindrome (2303443032).

The spelling of 1201222011 in words is "one billion, two hundred one million, two hundred twenty-two thousand, eleven".