210102120101 has 6 divisors (see below), whose sum is σ = 219634163910. Its totient is φ = 200967244808.

The previous prime is 210102120037. The next prime is 210102120121. The reversal of 210102120101 is 101021201012.

It can be written as a sum of positive squares in only one way, i.e., 114233860225 + 95868259876 = 337985^2 + 309626^2 .

It is not a de Polignac number, because 210102120101 - 2⁶ = 210102120037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102120121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 198583706 + ... + 198584763.

It is an arithmetic number, because the mean of its divisors is an integer number (36605693985).

Almost surely, 2^210102120101 is an apocalyptic number.

It is an amenable number.

210102120101 is a deficient number, since it is larger than the sum of its proper divisors (9532043809).

210102120101 is an equidigital number, since it uses as much as digits as its factorization.

210102120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397168515 (or 397168492 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210102120101 its reverse (101021201012), we get a palindrome (311123321113).

It can be divided in two parts, 2 and 10102120101, that multiplied together give a palindrome (20204240202).

The spelling of 210102120101 in words is "two hundred ten billion, one hundred two million, one hundred twenty thousand, one hundred one".