1201220331 has 8 divisors (see below), whose sum is σ = 1601813904. Its totient is φ = 800720160.

The previous prime is 1201220303. The next prime is 1201220341. The reversal of 1201220331 is 1330221021.

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

It is not a de Polignac number, because 1201220331 - 2⁷ = 1201220203 is a prime.

It is a super-2 number, since 2×1201220331² = 2885860567215499122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201220331.

It is not an unprimeable number, because it can be changed into a prime (1201220341) 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, 16261 + ... + 51641.

It is an arithmetic number, because the mean of its divisors is an integer number (200226738).

Almost surely, 2^1201220331 is an apocalyptic number.

1201220331 is a deficient number, since it is larger than the sum of its proper divisors (400593573).

1201220331 is a wasteful number, since it uses less digits than its factorization.

1201220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46701.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201220331 is about 34658.6256363405. The cubic root of 1201220331 is about 1063.0186680309.

Adding to 1201220331 its reverse (1330221021), we get a palindrome (2531441352).

The spelling of 1201220331 in words is "one billion, two hundred one million, two hundred twenty thousand, three hundred thirty-one".