202120200010101 has 4 divisors (see below), whose sum is σ = 269493600013472. Its totient is φ = 134746800006732.

The previous prime is 202120200010087. The next prime is 202120200010133. The reversal of 202120200010101 is 101010002021202.

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 not a de Polignac number, because 202120200010101 - 2¹¹ = 202120200008053 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 (202120200010151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33686700001681 + ... + 33686700001686.

It is an arithmetic number, because the mean of its divisors is an integer number (67373400003368).

Almost surely, 2^{202120200010101} is an apocalyptic number.

It is an amenable number.

202120200010101 is a deficient number, since it is larger than the sum of its proper divisors (67373400003371).

202120200010101 is an equidigital number, since it uses as much as digits as its factorization.

202120200010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67373400003370.

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

Adding to 202120200010101 its reverse (101010002021202), we get a palindrome (303130202031303).

The spelling of 202120200010101 in words is "two hundred two trillion, one hundred twenty billion, two hundred million, ten thousand, one hundred one".