33213020121 has 12 divisors (see below), whose sum is σ = 48879539748. Its totient is φ = 21724239264.

The previous prime is 33213020107. The next prime is 33213020161. The reversal of 33213020121 is 12102031233.

33213020121 is a `hidden beast` number, since 332 + 130 + 201 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12799754496 + 20413265625 = 113136^2 + 142875^2 .

It is not a de Polignac number, because 33213020121 - 2¹³ = 33213011929 is a prime.

It is a super-2 number, since 2×33213020121² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33213020094 and 33213020103.

It is not an unprimeable number, because it can be changed into a prime (33213020161) 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, 34814010 + ... + 34814963.

It is an arithmetic number, because the mean of its divisors is an integer number (4073294979).

Almost surely, 2^33213020121 is an apocalyptic number.

It is an amenable number.

33213020121 is a deficient number, since it is larger than the sum of its proper divisors (15666519627).

33213020121 is a wasteful number, since it uses less digits than its factorization.

33213020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69629032 (or 69629029 counting only the distinct ones).

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

Adding to 33213020121 its reverse (12102031233), we get a palindrome (45315051354).

The spelling of 33213020121 in words is "thirty-three billion, two hundred thirteen million, twenty thousand, one hundred twenty-one".