212021121343 has 2 divisors, whose sum is σ = 212021121344. Its totient is φ = 212021121342.

The previous prime is 212021121331. The next prime is 212021121397. The reversal of 212021121343 is 343121120212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212021121343 - 2⁵ = 212021121311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021121643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010560671 + 106010560672.

It is an arithmetic number, because the mean of its divisors is an integer number (106010560672).

Almost surely, 2^212021121343 is an apocalyptic number.

212021121343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021121343 is an equidigital number, since it uses as much as digits as its factorization.

212021121343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 212021121343 its reverse (343121120212), we get a palindrome (555142241555).

The spelling of 212021121343 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, three hundred forty-three".