2123203010321 has 32 divisors (see below), whose sum is σ = 2323912032000. Its totient is φ = 1933304405760.

The previous prime is 2123203010293. The next prime is 2123203010351. The reversal of 2123203010321 is 1230103023212.

It is a cyclic number.

It is not a de Polignac number, because 2123203010321 - 2²⁶ = 2123135901457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123203010293 and 2123203010302.

It is not an unprimeable number, because it can be changed into a prime (2123203010351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11130455 + ... + 11319603.

It is an arithmetic number, because the mean of its divisors is an integer number (72622251000).

Almost surely, 2^{2123203010321} is an apocalyptic number.

It is an amenable number.

2123203010321 is a deficient number, since it is larger than the sum of its proper divisors (200709021679).

2123203010321 is a wasteful number, since it uses less digits than its factorization.

2123203010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189449.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2123203010321 its reverse (1230103023212), we get a palindrome (3353306033533).

The spelling of 2123203010321 in words is "two trillion, one hundred twenty-three billion, two hundred three million, ten thousand, three hundred twenty-one".