1331244211 has 32 divisors (see below), whose sum is σ = 1582773696. Its totient is φ = 1105920000.

The previous prime is 1331244151. The next prime is 1331244223. The reversal of 1331244211 is 1124421331.

It is a 16-Lehmer number, since φ(1331244211) divides (1331244211-1)¹⁶.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331244211 is a prime.

It is a super-2 number, since 2×1331244211² = 3544422298642025042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331244311) 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 31 ways as a sum of consecutive naturals, for example, 3074251 + ... + 3074683.

It is an arithmetic number, because the mean of its divisors is an integer number (49461678).

Almost surely, 2^1331244211 is an apocalyptic number.

1331244211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1331244211 is a deficient number, since it is larger than the sum of its proper divisors (251529485).

1331244211 is a wasteful number, since it uses less digits than its factorization.

1331244211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its digits is 576, while the sum is 22.

The square root of 1331244211 is about 36486.2194670810. The cubic root of 1331244211 is about 1100.0672716434.

Adding to 1331244211 its reverse (1124421331), we get a palindrome (2455665542).

It can be divided in two parts, 1331 and 244211, that multiplied together give a square (325044841 = 18029²).

The spelling of 1331244211 in words is "one billion, three hundred thirty-one million, two hundred forty-four thousand, two hundred eleven".