1224132261 has 8 divisors (see below), whose sum is σ = 1780556064. Its totient is φ = 741898320.

The previous prime is 1224132199. The next prime is 1224132263. The reversal of 1224132261 is 1622314221.

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

It is not a de Polignac number, because 1224132261 - 2¹¹ = 1224130213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224132263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18547426 + ... + 18547491.

It is an arithmetic number, because the mean of its divisors is an integer number (222569508).

Almost surely, 2^1224132261 is an apocalyptic number.

1224132261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1224132261 is a deficient number, since it is larger than the sum of its proper divisors (556423803).

1224132261 is a wasteful number, since it uses less digits than its factorization.

1224132261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37094931.

The product of its digits is 1152, while the sum is 24.

The square root of 1224132261 is about 34987.6015325429. The cubic root of 1224132261 is about 1069.7347760256.

Adding to 1224132261 its reverse (1622314221), we get a palindrome (2846446482).

The spelling of 1224132261 in words is "one billion, two hundred twenty-four million, one hundred thirty-two thousand, two hundred sixty-one".