33031042121 has 16 divisors (see below), whose sum is σ = 41589307008. Its totient is φ = 25483632000.

The previous prime is 33031042111. The next prime is 33031042127. The reversal of 33031042121 is 12124013033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33031042121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33031042093 and 33031042102.

It is not an unprimeable number, because it can be changed into a prime (33031042127) 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, 2115860 + ... + 2131413.

It is an arithmetic number, because the mean of its divisors is an integer number (2599331688).

Almost surely, 2^33031042121 is an apocalyptic number.

It is an amenable number.

33031042121 is a deficient number, since it is larger than the sum of its proper divisors (8558264887).

33031042121 is a wasteful number, since it uses less digits than its factorization.

33031042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247392.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33031042121 its reverse (12124013033), we get a palindrome (45155055154).

The spelling of 33031042121 in words is "thirty-three billion, thirty-one million, forty-two thousand, one hundred twenty-one".