33430442121 has 16 divisors (see below), whose sum is σ = 49547373120. Its totient is φ = 22277604960.

The previous prime is 33430442011. The next prime is 33430442137. The reversal of 33430442121 is 12124403433.

33430442121 is a `hidden beast` number, since 334 + 304 + 4 + 2 + 1 + 21 = 666.

It is not a de Polignac number, because 33430442121 - 2¹⁷ = 33430311049 is a prime.

It is a super-2 number, since 2×33430442121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (33430422121) 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, 194095 + ... + 323316.

It is an arithmetic number, because the mean of its divisors is an integer number (3096710820).

Almost surely, 2^33430442121 is an apocalyptic number.

It is an amenable number.

33430442121 is a deficient number, since it is larger than the sum of its proper divisors (16116930999).

33430442121 is a wasteful number, since it uses less digits than its factorization.

33430442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519813 (or 519807 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 33430442121 its reverse (12124403433), we get a palindrome (45554845554).

The spelling of 33430442121 in words is "thirty-three billion, four hundred thirty million, four hundred forty-two thousand, one hundred twenty-one".