1221144462 has 24 divisors (see below), whose sum is σ = 2647915920. Its totient is φ = 406724640.

The previous prime is 1221144461. The next prime is 1221144473. The reversal of 1221144462 is 2644411221.

1221144462 is a `hidden beast` number, since 1 + 2 + 211 + 4 + 446 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221144461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3114 + ... + 49517.

It is an arithmetic number, because the mean of its divisors is an integer number (110329830).

Almost surely, 2^1221144462 is an apocalyptic number.

1221144462 is an abundant number, since it is smaller than the sum of its proper divisors (1426771458).

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

1221144462 is a wasteful number, since it uses less digits than its factorization.

1221144462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53928 (or 53925 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1221144462 is about 34944.8774786806. The cubic root of 1221144462 is about 1068.8637491324.

Adding to 1221144462 its reverse (2644411221), we get a palindrome (3865555683).

The spelling of 1221144462 in words is "one billion, two hundred twenty-one million, one hundred forty-four thousand, four hundred sixty-two".