12401221012224 has 144 divisors (see below), whose sum is σ = 36007722301824. Its totient is φ = 3757746995200.

The previous prime is 12401221012217. The next prime is 12401221012237. The reversal of 12401221012224 is 42221012210421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12401221012194 and 12401221012203.

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, 275052787 + ... + 275097869.

It is an arithmetic number, because the mean of its divisors is an integer number (250053627096).

Almost surely, 2^{12401221012224} is an apocalyptic number.

It is an amenable number.

12401221012224 is an abundant number, since it is smaller than the sum of its proper divisors (23606501289600).

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

12401221012224 is a wasteful number, since it uses less digits than its factorization.

12401221012224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77674 (or 77660 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12401221012224 its reverse (42221012210421), we get a palindrome (54622233222645).

The spelling of 12401221012224 in words is "twelve trillion, four hundred one billion, two hundred twenty-one million, twelve thousand, two hundred twenty-four".