202100202100221 has 8 divisors (see below), whose sum is σ = 269555664145824. Its totient is φ = 134689104060720.

The previous prime is 202100202100189. The next prime is 202100202100231. The reversal of 202100202100221 is 122001202001202.

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

It is not a de Polignac number, because 202100202100221 - 2⁵ = 202100202100189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202100202100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100202100231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11090990895 + ... + 11091009116.

It is an arithmetic number, because the mean of its divisors is an integer number (33694458018228).

Almost surely, 2^{202100202100221} is an apocalyptic number.

It is an amenable number.

202100202100221 is a deficient number, since it is larger than the sum of its proper divisors (67455462045603).

202100202100221 is a wasteful number, since it uses less digits than its factorization.

202100202100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22182003051.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202100202100221 its reverse (122001202001202), we get a palindrome (324101404101423).

The spelling of 202100202100221 in words is "two hundred two trillion, one hundred billion, two hundred two million, one hundred thousand, two hundred twenty-one".