202102210101 has 16 divisors (see below), whose sum is σ = 293983884288. Its totient is φ = 122479090800.

The previous prime is 202102210073. The next prime is 202102210103. The reversal of 202102210101 is 101012201202.

It is not a de Polignac number, because 202102210101 - 2⁷ = 202102209973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431970 + ... + 768636.

It is an arithmetic number, because the mean of its divisors is an integer number (18373992768).

Almost surely, 2^202102210101 is an apocalyptic number.

It is an amenable number.

202102210101 is a deficient number, since it is larger than the sum of its proper divisors (91881674187).

202102210101 is a wasteful number, since it uses less digits than its factorization.

202102210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354872.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202102210101 its reverse (101012201202), we get a palindrome (303114411303).

The spelling of 202102210101 in words is "two hundred two billion, one hundred two million, two hundred ten thousand, one hundred one".