212210021121101 has 2 divisors, whose sum is σ = 212210021121102. Its totient is φ = 212210021121100.

The previous prime is 212210021121071. The next prime is 212210021121211. The reversal of 212210021121101 is 101121120012212.

212210021121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192362336775625 + 19847684345476 = 13869475^2 + 4455074^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210021121101 - 2¹⁴ = 212210021104717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212210021121101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212210021121001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105010560550 + 106105010560551.

It is an arithmetic number, because the mean of its divisors is an integer number (106105010560551).

Almost surely, 2^{212210021121101} is an apocalyptic number.

It is an amenable number.

212210021121101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210021121101 is an equidigital number, since it uses as much as digits as its factorization.

212210021121101 is an evil number, because the sum of its binary digits is even.

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

Adding to 212210021121101 its reverse (101121120012212), we get a palindrome (313331141133313).

The spelling of 212210021121101 in words is "two hundred twelve trillion, two hundred ten billion, twenty-one million, one hundred twenty-one thousand, one hundred one".