202021200101 has 4 divisors (see below), whose sum is σ = 230881371552. Its totient is φ = 173161028652.

The previous prime is 202021200067. The next prime is 202021200127. The reversal of 202021200101 is 101002120202.

It is a happy number.

202021200101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101002120202 = 2 ⋅50501060101.

It is a cyclic number.

It is not a de Polignac number, because 202021200101 - 2¹⁰ = 202021199077 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 (202021200181) 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 in 3 ways as a sum of consecutive naturals, for example, 14430085715 + ... + 14430085728.

It is an arithmetic number, because the mean of its divisors is an integer number (57720342888).

Almost surely, 2^202021200101 is an apocalyptic number.

It is an amenable number.

202021200101 is a deficient number, since it is larger than the sum of its proper divisors (28860171451).

202021200101 is an equidigital number, since it uses as much as digits as its factorization.

202021200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28860171450.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202021200101 its reverse (101002120202), we get a palindrome (303023320303).

The spelling of 202021200101 in words is "two hundred two billion, twenty-one million, two hundred thousand, one hundred one".