221412432405612 has 24 divisors (see below), whose sum is σ = 590433153081856. Its totient is φ = 63260694973008.

The previous prime is 221412432405599. The next prime is 221412432405613. The reversal of 221412432405612 is 216504234214122.

It is not an unprimeable number, because it can be changed into a prime (221412432405613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317931145188 + ... + 1317931145355.

Almost surely, 2^{221412432405612} is an apocalyptic number.

It is an amenable number.

221412432405612 is an abundant number, since it is smaller than the sum of its proper divisors (369020720676244).

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

221412432405612 is a wasteful number, since it uses less digits than its factorization.

221412432405612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635862290557 (or 2635862290555 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 221412432405612 its reverse (216504234214122), we get a palindrome (437916666619734).

The spelling of 221412432405612 in words is "two hundred twenty-one trillion, four hundred twelve billion, four hundred thirty-two million, four hundred five thousand, six hundred twelve".