221424312446120 has 256 divisors, whose sum is σ = 586386791424000. Its totient is φ = 73677407698944.

The previous prime is 221424312446111. The next prime is 221424312446153. The reversal of 221424312446120 is 21644213424122.

It is a super-2 number, since 2×221424312446120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1512708296 + ... + 1512854664.

It is an arithmetic number, because the mean of its divisors is an integer number (2290573404000).

Almost surely, 2^{221424312446120} is an apocalyptic number.

221424312446120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221424312446120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293193395712000).

221424312446120 is an abundant number, since it is smaller than the sum of its proper divisors (364962478977880).

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

221424312446120 is a wasteful number, since it uses less digits than its factorization.

221424312446120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147400 (or 147396 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 38.

The spelling of 221424312446120 in words is "two hundred twenty-one trillion, four hundred twenty-four billion, three hundred twelve million, four hundred forty-six thousand, one hundred twenty".