20210210222101 has 2 divisors, whose sum is σ = 20210210222102. Its totient is φ = 20210210222100.

The previous prime is 20210210221973. The next prime is 20210210222107. The reversal of 20210210222101 is 10122201201202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20193798050001 + 16412172100 = 4493751^2 + 128110^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210210222101 - 2⁷ = 20210210221973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210210222107) 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, 10105105111050 + 10105105111051.

It is an arithmetic number, because the mean of its divisors is an integer number (10105105111051).

Almost surely, 2^{20210210222101} is an apocalyptic number.

It is an amenable number.

20210210222101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210210222101 is an equidigital number, since it uses as much as digits as its factorization.

20210210222101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20210210222101 its reverse (10122201201202), we get a palindrome (30332411423303).

The spelling of 20210210222101 in words is "twenty trillion, two hundred ten billion, two hundred ten million, two hundred twenty-two thousand, one hundred one".