21032033121 has 12 divisors (see below), whose sum is σ = 33141385680. Its totient is φ = 12746686680.

The previous prime is 21032033117. The next prime is 21032033161. The reversal of 21032033121 is 12133023012.

21032033121 is a `hidden beast` number, since 2 + 10 + 320 + 331 + 2 + 1 = 666.

It is not a de Polignac number, because 21032033121 - 2² = 21032033117 is a prime.

It is a super-3 number, since 3×21032033121³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032033094 and 21032033103.

It is not an unprimeable number, because it can be changed into a prime (21032033161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106222291 + ... + 106222488.

It is an arithmetic number, because the mean of its divisors is an integer number (2761782140).

Almost surely, 2^21032033121 is an apocalyptic number.

It is an amenable number.

21032033121 is a deficient number, since it is larger than the sum of its proper divisors (12109352559).

21032033121 is a wasteful number, since it uses less digits than its factorization.

21032033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212444796 (or 212444793 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21032033121 its reverse (12133023012), we get a palindrome (33165056133).

The spelling of 21032033121 in words is "twenty-one billion, thirty-two million, thirty-three thousand, one hundred twenty-one".