202020112100101 has 4 divisors (see below), whose sum is σ = 210803595234912. Its totient is φ = 193236628965292.

The previous prime is 202020112100099. The next prime is 202020112100119. The reversal of 202020112100101 is 101001211020202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202020112100101 - 2¹ = 202020112100099 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 (202020112100701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391741567371 + ... + 4391741567416.

It is an arithmetic number, because the mean of its divisors is an integer number (52700898808728).

Almost surely, 2^{202020112100101} is an apocalyptic number.

It is an amenable number.

202020112100101 is a deficient number, since it is larger than the sum of its proper divisors (8783483134811).

202020112100101 is an equidigital number, since it uses as much as digits as its factorization.

202020112100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783483134810.

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

Adding to 202020112100101 its reverse (101001211020202), we get a palindrome (303021323120303).

The spelling of 202020112100101 in words is "two hundred two trillion, twenty billion, one hundred twelve million, one hundred thousand, one hundred one".