2133021013121 has 4 divisors (see below), whose sum is σ = 2133026085972. Its totient is φ = 2133015940272.

The previous prime is 2133021013099. The next prime is 2133021013217. The reversal of 2133021013121 is 1213101203312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640262426896 + 1492758586225 = 800164^2 + 1221785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133021013121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2133021013093 and 2133021013102.

It is not an unprimeable number, because it can be changed into a prime (2133021013021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842410 + ... + 2767763.

It is an arithmetic number, because the mean of its divisors is an integer number (533256521493).

Almost surely, 2^{2133021013121} is an apocalyptic number.

It is an amenable number.

2133021013121 is a deficient number, since it is larger than the sum of its proper divisors (5072851).

2133021013121 is an equidigital number, since it uses as much as digits as its factorization.

2133021013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072850.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2133021013121 its reverse (1213101203312), we get a palindrome (3346122216433).

The spelling of 2133021013121 in words is "two trillion, one hundred thirty-three billion, twenty-one million, thirteen thousand, one hundred twenty-one".