1331222133 has 16 divisors (see below), whose sum is σ = 1807790400. Its totient is φ = 871113600.

The previous prime is 1331222033. The next prime is 1331222171. The reversal of 1331222133 is 3312221331.

It is not a de Polignac number, because 1331222133 - 2⁹ = 1331221621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331222033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118713 + ... + 129441.

It is an arithmetic number, because the mean of its divisors is an integer number (112986900).

Almost surely, 2^1331222133 is an apocalyptic number.

It is an amenable number.

1331222133 is a deficient number, since it is larger than the sum of its proper divisors (476568267).

1331222133 is a wasteful number, since it uses less digits than its factorization.

1331222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11492.

The product of its digits is 648, while the sum is 21.

The square root of 1331222133 is about 36485.9169132420. The cubic root of 1331222133 is about 1100.0611902600.

Adding to 1331222133 its reverse (3312221331), we get a palindrome (4643443464).

It can be divided in two parts, 133 and 1222133, that added together give a triangular number (1222266 = T₁₅₆₃).

The spelling of 1331222133 in words is "one billion, three hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-three".