33102055421 has 4 divisors (see below), whose sum is σ = 33103022844. Its totient is φ = 33101088000.

The previous prime is 33102055411. The next prime is 33102055447. The reversal of 33102055421 is 12455020133.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31537852921 + 1564202500 = 177589^2 + 39550^2 .

It is a cyclic number.

It is not a de Polignac number, because 33102055421 - 2¹⁴ = 33102039037 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 (33102055411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430430 + ... + 501471.

It is an arithmetic number, because the mean of its divisors is an integer number (8275755711).

Almost surely, 2^33102055421 is an apocalyptic number.

It is an amenable number.

33102055421 is a deficient number, since it is larger than the sum of its proper divisors (967423).

33102055421 is an equidigital number, since it uses as much as digits as its factorization.

33102055421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967422.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 33102055421 its reverse (12455020133), we get a palindrome (45557075554).

The spelling of 33102055421 in words is "thirty-three billion, one hundred two million, fifty-five thousand, four hundred twenty-one".