212021210121011 has 2 divisors, whose sum is σ = 212021210121012. Its totient is φ = 212021210121010.

The previous prime is 212021210120969. The next prime is 212021210121023. The reversal of 212021210121011 is 110121012120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021210121011 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021210121911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010605060505 + 106010605060506.

It is an arithmetic number, because the mean of its divisors is an integer number (106010605060506).

Almost surely, 2^{212021210121011} is an apocalyptic number.

212021210121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021210121011 is an equidigital number, since it uses as much as digits as its factorization.

212021210121011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212021210121011 its reverse (110121012120212), we get a palindrome (322142222241223).

The spelling of 212021210121011 in words is "two hundred twelve trillion, twenty-one billion, two hundred ten million, one hundred twenty-one thousand, eleven".