1201222263 has 16 divisors (see below), whose sum is σ = 1633486176. Its totient is φ = 784917120.

The previous prime is 1201222259. The next prime is 1201222271. The reversal of 1201222263 is 3622221021.

It is not a de Polignac number, because 1201222263 - 2² = 1201222259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201222273) 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 15 ways as a sum of consecutive naturals, for example, 184581 + ... + 190977.

It is an arithmetic number, because the mean of its divisors is an integer number (102092886).

Almost surely, 2^1201222263 is an apocalyptic number.

1201222263 is a deficient number, since it is larger than the sum of its proper divisors (432263913).

1201222263 is a wasteful number, since it uses less digits than its factorization.

1201222263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1201222263 is about 34658.6535081789. The cubic root of 1201222263 is about 1063.0192379377.

Adding to 1201222263 its reverse (3622221021), we get a palindrome (4823443284).

The spelling of 1201222263 in words is "one billion, two hundred one million, two hundred twenty-two thousand, two hundred sixty-three".