2121023403133 has 2 divisors, whose sum is σ = 2121023403134. Its totient is φ = 2121023403132.

The previous prime is 2121023403119. The next prime is 2121023403137. The reversal of 2121023403133 is 3313043201212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055432607684 + 65590795449 = 1433678^2 + 256107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121023403133 - 2⁵ = 2121023403101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121023403098 and 2121023403107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121023403137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511701566 + 1060511701567.

It is an arithmetic number, because the mean of its divisors is an integer number (1060511701567).

Almost surely, 2^{2121023403133} is an apocalyptic number.

It is an amenable number.

2121023403133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121023403133 is an equidigital number, since it uses as much as digits as its factorization.

2121023403133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 2121023403133 its reverse (3313043201212), we get a palindrome (5434066604345).

The spelling of 2121023403133 in words is "two trillion, one hundred twenty-one billion, twenty-three million, four hundred three thousand, one hundred thirty-three".