221434121503250 has 64 divisors (see below), whose sum is σ = 417344982971904. Its totient is φ = 87972060702400.

The previous prime is 221434121503183. The next prime is 221434121503271. The reversal of 221434121503250 is 52305121434122.

It is a self number, because there is not a number n which added to its sum of digits gives 221434121503250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39910547 + ... + 45118953.

It is an arithmetic number, because the mean of its divisors is an integer number (6521015358936).

Almost surely, 2^{221434121503250} is an apocalyptic number.

221434121503250 is a deficient number, since it is larger than the sum of its proper divisors (195910861468654).

221434121503250 is a wasteful number, since it uses less digits than its factorization.

221434121503250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209580 (or 5209570 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 221434121503250 its reverse (52305121434122), we get a palindrome (273739242937372).

The spelling of 221434121503250 in words is "two hundred twenty-one trillion, four hundred thirty-four billion, one hundred twenty-one million, five hundred three thousand, two hundred fifty".