202021220101 has 8 divisors (see below), whose sum is σ = 210904788600. Its totient is φ = 193265472960.

The previous prime is 202021220053. The next prime is 202021220117. The reversal of 202021220101 is 101022120202.

It is a happy number.

202021220101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24822317601 + 177198902500 = 157551^2 + 420950^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202021220101 - 2³⁵ = 167661481733 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 (202021220131) 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 7 ways as a sum of consecutive naturals, for example, 31952110 + ... + 31958431.

It is an arithmetic number, because the mean of its divisors is an integer number (26363098575).

Almost surely, 2^202021220101 is an apocalyptic number.

It is an amenable number.

202021220101 is a deficient number, since it is larger than the sum of its proper divisors (8883568499).

202021220101 is a wasteful number, since it uses less digits than its factorization.

202021220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63910679.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202021220101 its reverse (101022120202), we get a palindrome (303043340303).

The spelling of 202021220101 in words is "two hundred two billion, twenty-one million, two hundred twenty thousand, one hundred one".