202100202221221 has 8 divisors (see below), whose sum is σ = 202240794634560. Its totient is φ = 201959658188352.

The previous prime is 202100202221167. The next prime is 202100202221227. The reversal of 202100202221221 is 122122202001202.

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 202100202221221 - 2²⁵ = 202100168666789 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 (202100202221227) 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, 3735585 + ... + 20448838.

It is an arithmetic number, because the mean of its divisors is an integer number (25280099329320).

Almost surely, 2^{202100202221221} is an apocalyptic number.

It is an amenable number.

202100202221221 is a deficient number, since it is larger than the sum of its proper divisors (140592413339).

202100202221221 is a wasteful number, since it uses less digits than its factorization.

202100202221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190235.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202100202221221 its reverse (122122202001202), we get a palindrome (324222404222423).

The spelling of 202100202221221 in words is "two hundred two trillion, one hundred billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".