1227142224 has 240 divisors, whose sum is σ = 4441382400. Its totient is φ = 318660480.

The previous prime is 1227142211. The next prime is 1227142237. The reversal of 1227142224 is 4222417221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1227142211) and next prime (1227142237).

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 297327 + ... + 301425.

It is an arithmetic number, because the mean of its divisors is an integer number (18505760).

Almost surely, 2^1227142224 is an apocalyptic number.

1227142224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227142224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2220691200).

1227142224 is an abundant number, since it is smaller than the sum of its proper divisors (3214240176).

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

1227142224 is a wasteful number, since it uses less digits than its factorization.

1227142224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140 (or 4122 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 1227142224 is about 35030.5898323166. The cubic root of 1227142224 is about 1070.6108324072.

Adding to 1227142224 its reverse (4222417221), we get a palindrome (5449559445).

The spelling of 1227142224 in words is "one billion, two hundred twenty-seven million, one hundred forty-two thousand, two hundred twenty-four".