212121003011 has 2 divisors, whose sum is σ = 212121003012. Its totient is φ = 212121003010.

The previous prime is 212121002971. The next prime is 212121003053. The reversal of 212121003011 is 110300121212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212121003011 is a prime.

It is a super-3 number, since 3×212121003011³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (212121002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060501505 + 106060501506.

It is an arithmetic number, because the mean of its divisors is an integer number (106060501506).

Almost surely, 2^212121003011 is an apocalyptic number.

212121003011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212121003011 is an equidigital number, since it uses as much as digits as its factorization.

212121003011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212121003011 its reverse (110300121212), we get a palindrome (322421124223).

The spelling of 212121003011 in words is "two hundred twelve billion, one hundred twenty-one million, three thousand, eleven".