33421120121 has 4 divisors (see below), whose sum is σ = 33426624000. Its totient is φ = 33415616244.

The previous prime is 33421120091. The next prime is 33421120147. The reversal of 33421120121 is 12102112433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12102112433 = 1093 ⋅11072381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33421120121 is a prime.

It is a super-2 number, since 2×33421120121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33421120093 and 33421120102.

It is not an unprimeable number, because it can be changed into a prime (33421120171) 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, 2742821 + ... + 2754978.

It is an arithmetic number, because the mean of its divisors is an integer number (8356656000).

Almost surely, 2^33421120121 is an apocalyptic number.

It is an amenable number.

33421120121 is a deficient number, since it is larger than the sum of its proper divisors (5503879).

33421120121 is an equidigital number, since it uses as much as digits as its factorization.

33421120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503878.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 33421120121 its reverse (12102112433), we get a palindrome (45523232554).

The spelling of 33421120121 in words is "thirty-three billion, four hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".