212011121323 has 2 divisors, whose sum is σ = 212011121324. Its totient is φ = 212011121322.

The previous prime is 212011121317. The next prime is 212011121347. The reversal of 212011121323 is 323121110212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011121323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212011121323.

It is not a weakly prime, because it can be changed into another prime (212011121363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005560661 + 106005560662.

It is an arithmetic number, because the mean of its divisors is an integer number (106005560662).

Almost surely, 2^212011121323 is an apocalyptic number.

212011121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011121323 is an equidigital number, since it uses as much as digits as its factorization.

212011121323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212011121323 its reverse (323121110212), we get a palindrome (535132231535).

The spelling of 212011121323 in words is "two hundred twelve billion, eleven million, one hundred twenty-one thousand, three hundred twenty-three".