33021321053 has 24 divisors (see below), whose sum is σ = 40290394368. Its totient is φ = 26497212192.

The previous prime is 33021321049. The next prime is 33021321083. The reversal of 33021321053 is 35012312033.

It is not a de Polignac number, because 33021321053 - 2² = 33021321049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021321083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79175 + ... + 268907.

It is an arithmetic number, because the mean of its divisors is an integer number (1678766432).

Almost surely, 2^33021321053 is an apocalyptic number.

It is an amenable number.

33021321053 is a deficient number, since it is larger than the sum of its proper divisors (7269073315).

33021321053 is a wasteful number, since it uses less digits than its factorization.

33021321053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189833 (or 189810 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

Adding to 33021321053 its reverse (35012312033), we get a palindrome (68033633086).

The spelling of 33021321053 in words is "thirty-three billion, twenty-one million, three hundred twenty-one thousand, fifty-three".