33402232121 has 2 divisors, whose sum is σ = 33402232122. Its totient is φ = 33402232120.

The previous prime is 33402232049. The next prime is 33402232141. The reversal of 33402232121 is 12123220433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31200276496 + 2201955625 = 176636^2 + 46925^2 .

It is a cyclic number.

It is not a de Polignac number, because 33402232121 - 2¹⁸ = 33401969977 is a prime.

It is a super-2 number, since 2×33402232121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33402232141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16701116060 + 16701116061.

It is an arithmetic number, because the mean of its divisors is an integer number (16701116061).

Almost surely, 2^33402232121 is an apocalyptic number.

It is an amenable number.

33402232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33402232121 is an equidigital number, since it uses as much as digits as its factorization.

33402232121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 33402232121 its reverse (12123220433), we get a palindrome (45525452554).

The spelling of 33402232121 in words is "thirty-three billion, four hundred two million, two hundred thirty-two thousand, one hundred twenty-one".