202021220001 has 16 divisors (see below), whose sum is σ = 283075204544. Its totient is φ = 127993328064.

The previous prime is 202021219993. The next prime is 202021220021. The reversal of 202021220001 is 100022120202.

202021220001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202021220001 - 2³ = 202021219993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202021220021) 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 15 ways as a sum of consecutive naturals, for example, 21158146 + ... + 21167691.

It is an arithmetic number, because the mean of its divisors is an integer number (17692200284).

Almost surely, 2^202021220001 is an apocalyptic number.

It is an amenable number.

202021220001 is a deficient number, since it is larger than the sum of its proper divisors (81053984543).

202021220001 is a wasteful number, since it uses less digits than its factorization.

202021220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42325920.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202021220001 its reverse (100022120202), we get a palindrome (302043340203).

The spelling of 202021220001 in words is "two hundred two billion, twenty-one million, two hundred twenty thousand, one".