212020120012121 has 2 divisors, whose sum is σ = 212020120012122. Its totient is φ = 212020120012120.

The previous prime is 212020120012111. The next prime is 212020120012147. The reversal of 212020120012121 is 121210021020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176406211240000 + 35613908772121 = 13281800^2 + 5967739^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020120012121 - 2¹⁴ = 212020119995737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020120012121.

It is not a weakly prime, because it can be changed into another prime (212020120012111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010060006060 + 106010060006061.

It is an arithmetic number, because the mean of its divisors is an integer number (106010060006061).

Almost surely, 2^{212020120012121} is an apocalyptic number.

It is an amenable number.

212020120012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020120012121 is an equidigital number, since it uses as much as digits as its factorization.

212020120012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212020120012121 its reverse (121210021020212), we get a palindrome (333230141032333).

The spelling of 212020120012121 in words is "two hundred twelve trillion, twenty billion, one hundred twenty million, twelve thousand, one hundred twenty-one".