202220210120221 has 4 divisors (see below), whose sum is σ = 202222661148832. Its totient is φ = 202217759091612.

The previous prime is 202220210120219. The next prime is 202220210120231. The reversal of 202220210120221 is 122021012022202.

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.

It is a cyclic number.

It is not a de Polignac number, because 202220210120221 - 2¹ = 202220210120219 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 (202220210120231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225390545 + ... + 1225555558.

It is an arithmetic number, because the mean of its divisors is an integer number (50555665287208).

Almost surely, 2^{202220210120221} is an apocalyptic number.

It is an amenable number.

202220210120221 is a deficient number, since it is larger than the sum of its proper divisors (2451028611).

202220210120221 is an equidigital number, since it uses as much as digits as its factorization.

202220210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451028610.

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

Adding to 202220210120221 its reverse (122021012022202), we get a palindrome (324241222142423).

The spelling of 202220210120221 in words is "two hundred two trillion, two hundred twenty billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".