1253322500221 has 16 divisors (see below), whose sum is σ = 1431448925760. Its totient is φ = 1086840805120.

The previous prime is 1253322500203. The next prime is 1253322500233. The reversal of 1253322500221 is 1220052233521.

It is a cyclic number.

It is not a de Polignac number, because 1253322500221 - 2⁷ = 1253322500093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253322500221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253322500281) 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, 23641660 + ... + 23694613.

It is an arithmetic number, because the mean of its divisors is an integer number (89465557860).

Almost surely, 2^{1253322500221} is an apocalyptic number.

1253322500221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1253322500221 is a deficient number, since it is larger than the sum of its proper divisors (178126425539).

1253322500221 is a wasteful number, since it uses less digits than its factorization.

1253322500221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47336396.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 1253322500221 its reverse (1220052233521), we get a palindrome (2473374733742).

The spelling of 1253322500221 in words is "one trillion, two hundred fifty-three billion, three hundred twenty-two million, five hundred thousand, two hundred twenty-one".