121020033213 has 12 divisors (see below), whose sum is σ = 174883179328. Its totient is φ = 80644730760.

The previous prime is 121020033203. The next prime is 121020033221. The reversal of 121020033213 is 312330020121.

121020033213 is a `hidden beast` number, since 121 + 0 + 200 + 332 + 13 = 666.

It is not a de Polignac number, because 121020033213 - 2⁸ = 121020032957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020033203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2919223 + ... + 2960388.

Almost surely, 2^121020033213 is an apocalyptic number.

It is an amenable number.

121020033213 is a deficient number, since it is larger than the sum of its proper divisors (53863146115).

121020033213 is a wasteful number, since it uses less digits than its factorization.

121020033213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881904 (or 5881901 counting only the distinct ones).

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

Adding to 121020033213 its reverse (312330020121), we get a palindrome (433350053334).

The spelling of 121020033213 in words is "one hundred twenty-one billion, twenty million, thirty-three thousand, two hundred thirteen".