2133123132221 has 4 divisors (see below), whose sum is σ = 2133137623872. Its totient is φ = 2133108640572.

The previous prime is 2133123132199. The next prime is 2133123132223. The reversal of 2133123132221 is 1222313213312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2133123132221 - 2⁶ = 2133123132157 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 (2133123132223) 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, 7022741 + ... + 7320186.

It is an arithmetic number, because the mean of its divisors is an integer number (533284405968).

Almost surely, 2^{2133123132221} is an apocalyptic number.

It is an amenable number.

2133123132221 is a deficient number, since it is larger than the sum of its proper divisors (14491651).

2133123132221 is a wasteful number, since it uses less digits than its factorization.

2133123132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14491650.

The product of its digits is 2592, while the sum is 26.

Adding to 2133123132221 its reverse (1222313213312), we get a palindrome (3355436345533).

The spelling of 2133123132221 in words is "two trillion, one hundred thirty-three billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty-one".