1253533034221 has 8 divisors (see below), whose sum is σ = 1393505705984. Its totient is φ = 1119781370160.

The previous prime is 1253533034209. The next prime is 1253533034263. The reversal of 1253533034221 is 1224303353521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253533034221 - 2¹¹ = 1253533032173 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 (1253533037221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555251501 + ... + 1555252306.

It is an arithmetic number, because the mean of its divisors is an integer number (174188213248).

Almost surely, 2^{1253533034221} is an apocalyptic number.

It is an amenable number.

1253533034221 is a deficient number, since it is larger than the sum of its proper divisors (139972671763).

1253533034221 is a wasteful number, since it uses less digits than its factorization.

1253533034221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110503851.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 1253533034221 its reverse (1224303353521), we get a palindrome (2477836387742).

The spelling of 1253533034221 in words is "one trillion, two hundred fifty-three billion, five hundred thirty-three million, thirty-four thousand, two hundred twenty-one".