1331122215 has 8 divisors (see below), whose sum is σ = 2129795568. Its totient is φ = 709931840.

The previous prime is 1331122201. The next prime is 1331122283. The reversal of 1331122215 is 5122211331.

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

It is not a de Polignac number, because 1331122215 - 2⁸ = 1331121959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331122191 and 1331122200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44370726 + ... + 44370755.

It is an arithmetic number, because the mean of its divisors is an integer number (266224446).

Almost surely, 2^1331122215 is an apocalyptic number.

1331122215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1331122215 is a deficient number, since it is larger than the sum of its proper divisors (798673353).

1331122215 is an equidigital number, since it uses as much as digits as its factorization.

1331122215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88741489.

The product of its digits is 360, while the sum is 21.

The square root of 1331122215 is about 36484.5476195060. The cubic root of 1331122215 is about 1100.0336670136.

Adding to 1331122215 its reverse (5122211331), we get a palindrome (6453333546).

The spelling of 1331122215 in words is "one billion, three hundred thirty-one million, one hundred twenty-two thousand, two hundred fifteen".