212121200233231 has 2 divisors, whose sum is σ = 212121200233232. Its totient is φ = 212121200233230.

The previous prime is 212121200233211. The next prime is 212121200233259. The reversal of 212121200233231 is 132332002121212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212121200233231 - 2¹⁷ = 212121200102159 is a prime.

It is a super-2 number, since 2×212121200233231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212121200233196 and 212121200233205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212121200233211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060600116615 + 106060600116616.

It is an arithmetic number, because the mean of its divisors is an integer number (106060600116616).

Almost surely, 2^{212121200233231} is an apocalyptic number.

212121200233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121200233231 is an equidigital number, since it uses as much as digits as its factorization.

212121200233231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 212121200233231 its reverse (132332002121212), we get a palindrome (344453202354443).

The spelling of 212121200233231 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred million, two hundred thirty-three thousand, two hundred thirty-one".