1222401500544 has 128 divisors (see below), whose sum is σ = 3872203706880. Its totient is φ = 334072442880.

The previous prime is 1222401500527. The next prime is 1222401500563. The reversal of 1222401500544 is 4450051042221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9824317 + ... + 9947964.

It is an arithmetic number, because the mean of its divisors is an integer number (30251591460).

Almost surely, 2^{1222401500544} is an apocalyptic number.

1222401500544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1222401500544 is an abundant number, since it is smaller than the sum of its proper divisors (2649802206336).

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

1222401500544 is a wasteful number, since it uses less digits than its factorization.

1222401500544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19772328 (or 19772316 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 1222401500544 its reverse (4450051042221), we get a palindrome (5672452542765).

The spelling of 1222401500544 in words is "one trillion, two hundred twenty-two billion, four hundred one million, five hundred thousand, five hundred forty-four".