210120222101 has 2 divisors, whose sum is σ = 210120222102. Its totient is φ = 210120222100.

The previous prime is 210120222073. The next prime is 210120222119. The reversal of 210120222101 is 101222021012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190575902500 + 19544319601 = 436550^2 + 139801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120222101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120222181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060111050 + 105060111051.

It is an arithmetic number, because the mean of its divisors is an integer number (105060111051).

Almost surely, 2^210120222101 is an apocalyptic number.

It is an amenable number.

210120222101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120222101 is an equidigital number, since it uses as much as digits as its factorization.

210120222101 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 14.

Adding to 210120222101 its reverse (101222021012), we get a palindrome (311342243113).

The spelling of 210120222101 in words is "two hundred ten billion, one hundred twenty million, two hundred twenty-two thousand, one hundred one".