211020020120101 has 2 divisors, whose sum is σ = 211020020120102. Its totient is φ = 211020020120100.

The previous prime is 211020020120083. The next prime is 211020020120123. The reversal of 211020020120101 is 101021020020112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195229331057601 + 15790689062500 = 13972449^2 + 3973750^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020020120101 - 2⁹ = 211020020119589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020020120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510010060050 + 105510010060051.

It is an arithmetic number, because the mean of its divisors is an integer number (105510010060051).

Almost surely, 2^{211020020120101} is an apocalyptic number.

It is an amenable number.

211020020120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020020120101 is an equidigital number, since it uses as much as digits as its factorization.

211020020120101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211020020120101 its reverse (101021020020112), we get a palindrome (312041040140213).

The spelling of 211020020120101 in words is "two hundred eleven trillion, twenty billion, twenty million, one hundred twenty thousand, one hundred one".