221035501305253 has 16 divisors (see below), whose sum is σ = 233986330049472. Its totient is φ = 208543965840000.

The previous prime is 221035501305149. The next prime is 221035501305287. The reversal of 221035501305253 is 352503105530122.

It is a cyclic number.

It is not a de Polignac number, because 221035501305253 - 2⁴¹ = 218836478049701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221035501305293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620488503 + ... + 620844628.

It is an arithmetic number, because the mean of its divisors is an integer number (14624145628092).

Almost surely, 2^{221035501305253} is an apocalyptic number.

It is an amenable number.

221035501305253 is a deficient number, since it is larger than the sum of its proper divisors (12950828744219).

221035501305253 is a wasteful number, since it uses less digits than its factorization.

221035501305253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241333316.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 221035501305253 its reverse (352503105530122), we get a palindrome (573538606835375).

The spelling of 221035501305253 in words is "two hundred twenty-one trillion, thirty-five billion, five hundred one million, three hundred five thousand, two hundred fifty-three".