212011222121999 has 2 divisors, whose sum is σ = 212011222122000. Its totient is φ = 212011222121998.

The previous prime is 212011222121911. The next prime is 212011222122053. The reversal of 212011222121999 is 999121222110212.

212011222121999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011222121999 is a prime.

It is a super-3 number, since 3×212011222121999³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212011282121999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005611060999 + 106005611061000.

It is an arithmetic number, because the mean of its divisors is an integer number (106005611061000).

Almost surely, 2^{212011222121999} is an apocalyptic number.

212011222121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011222121999 is an equidigital number, since it uses as much as digits as its factorization.

212011222121999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 212011222121999 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, nine hundred ninety-nine".