2121213033 has 12 divisors (see below), whose sum is σ = 3169629060. Its totient is φ = 1365378336.

The previous prime is 2121213007. The next prime is 2121213041. The reversal of 2121213033 is 3303121212.

It can be written as a sum of positive squares in 2 ways, for example, as 1530139689 + 591073344 = 39117^2 + 24312^2 .

It is not a de Polignac number, because 2121213033 - 2⁹ = 2121212521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121212997 and 2121213015.

It is not an unprimeable number, because it can be changed into a prime (2121211033) 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, 4063366 + ... + 4063887.

It is an arithmetic number, because the mean of its divisors is an integer number (264135755).

Almost surely, 2^2121213033 is an apocalyptic number.

It is an amenable number.

2121213033 is a deficient number, since it is larger than the sum of its proper divisors (1048416027).

2121213033 is a wasteful number, since it uses less digits than its factorization.

2121213033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127288 (or 8127285 counting only the distinct ones).

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

The square root of 2121213033 is about 46056.6285457370. The cubic root of 2121213033 is about 1284.8766268124.

Adding to 2121213033 its reverse (3303121212), we get a palindrome (5424334245).

The spelling of 2121213033 in words is "two billion, one hundred twenty-one million, two hundred thirteen thousand, thirty-three".