221434011332444 has 24 divisors (see below), whose sum is σ = 407905355827200. Its totient is φ = 104889641042160.

The previous prime is 221434011332383. The next prime is 221434011332473. The reversal of 221434011332444 is 444233110434122.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 221434011332398 and 221434011332407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63029579 + ... + 66449949.

It is an arithmetic number, because the mean of its divisors is an integer number (16996056492800).

Almost surely, 2^{221434011332444} is an apocalyptic number.

It is an amenable number.

221434011332444 is a deficient number, since it is larger than the sum of its proper divisors (186471344494756).

221434011332444 is a wasteful number, since it uses less digits than its factorization.

221434011332444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272233 (or 4272231 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 221434011332444 its reverse (444233110434122), we get a palindrome (665667121766566).

The spelling of 221434011332444 in words is "two hundred twenty-one trillion, four hundred thirty-four billion, eleven million, three hundred thirty-two thousand, four hundred forty-four".