2221431340144 has 20 divisors (see below), whose sum is σ = 4305634694560. Its totient is φ = 1110299806080.

The previous prime is 2221431340127. The next prime is 2221431340169. The reversal of 2221431340144 is 4410431341222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25947429 + ... + 26032900.

It is an arithmetic number, because the mean of its divisors is an integer number (215281734728).

Almost surely, 2^{2221431340144} is an apocalyptic number.

It is an amenable number.

2221431340144 is a deficient number, since it is larger than the sum of its proper divisors (2084203354416).

2221431340144 is a wasteful number, since it uses less digits than its factorization.

2221431340144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51983008 (or 51983002 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 2221431340144 its reverse (4410431341222), we get a palindrome (6631862681366).

The spelling of 2221431340144 in words is "two trillion, two hundred twenty-one billion, four hundred thirty-one million, three hundred forty thousand, one hundred forty-four".