33000253421 has 16 divisors (see below), whose sum is σ = 35033888640. Its totient is φ = 31017539520.

The previous prime is 33000253373. The next prime is 33000253427. The reversal of 33000253421 is 12435200033.

It is a cyclic number.

It is not a de Polignac number, because 33000253421 - 2⁶ = 33000253357 is a prime.

It is a super-5 number, since 5×33000253421⁵ (a number of 54 digits) contains 55555 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33000253427) 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, 1488806 + ... + 1510808.

It is an arithmetic number, because the mean of its divisors is an integer number (2189618040).

Almost surely, 2^33000253421 is an apocalyptic number.

It is an amenable number.

33000253421 is a deficient number, since it is larger than the sum of its proper divisors (2033635219).

33000253421 is a wasteful number, since it uses less digits than its factorization.

33000253421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23156.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 33000253421 its reverse (12435200033), we get a palindrome (45435453454).

The spelling of 33000253421 in words is "thirty-three billion, two hundred fifty-three thousand, four hundred twenty-one".