2123213210231 has 2 divisors, whose sum is σ = 2123213210232. Its totient is φ = 2123213210230.

The previous prime is 2123213210221. The next prime is 2123213210249. The reversal of 2123213210231 is 1320123123212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123213210231 - 2³⁴ = 2106033341047 is a prime.

It is a super-2 number, since 2×2123213210231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123213210197 and 2123213210206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123213210201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061606605115 + 1061606605116.

It is an arithmetic number, because the mean of its divisors is an integer number (1061606605116).

Almost surely, 2^{2123213210231} is an apocalyptic number.

2123213210231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123213210231 is an equidigital number, since it uses as much as digits as its factorization.

2123213210231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2123213210231 its reverse (1320123123212), we get a palindrome (3443336333443).

The spelling of 2123213210231 in words is "two trillion, one hundred twenty-three billion, two hundred thirteen million, two hundred ten thousand, two hundred thirty-one".