1211422224 has 20 divisors (see below), whose sum is σ = 3129507536. Its totient is φ = 403807392.

The previous prime is 1211422183. The next prime is 1211422229. The reversal of 1211422224 is 4222241121.

It is a super-3 number, since 3×1211422224³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1211422224.

It is not an unprimeable number, because it can be changed into a prime (1211422229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12618934 + ... + 12619029.

Almost surely, 2^1211422224 is an apocalyptic number.

It is an amenable number.

1211422224 is an abundant number, since it is smaller than the sum of its proper divisors (1918085312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211422224 is a wasteful number, since it uses less digits than its factorization.

1211422224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25237974 (or 25237968 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 1211422224 is about 34805.4912908868. The cubic root of 1211422224 is about 1066.0195733188.

Adding to 1211422224 its reverse (4222241121), we get a palindrome (5433663345).

The spelling of 1211422224 in words is "one billion, two hundred eleven million, four hundred twenty-two thousand, two hundred twenty-four".