1331201011 has 8 divisors (see below), whose sum is σ = 1547159040. Its totient is φ = 1121689608.

The previous prime is 1331200999. The next prime is 1331201021. The reversal of 1331201011 is 1101021331.

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 1331201011 - 2⁷ = 1331200883 is a prime.

It is a super-2 number, since 2×1331201011² = 3544192263374844242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331200982 and 1331201000.

It is not an unprimeable number, because it can be changed into a prime (1331201021) 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, 1611211 + ... + 1612036.

It is an arithmetic number, because the mean of its divisors is an integer number (193394880).

Almost surely, 2^1331201011 is an apocalyptic number.

1331201011 is a deficient number, since it is larger than the sum of its proper divisors (215958029).

1331201011 is an equidigital number, since it uses as much as digits as its factorization.

1331201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223313.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1331201011 is about 36485.6274579457. The cubic root of 1331201011 is about 1100.0553721437.

Adding to 1331201011 its reverse (1101021331), we get a palindrome (2432222342).

The spelling of 1331201011 in words is "one billion, three hundred thirty-one million, two hundred one thousand, eleven".