222021220120221 has 16 divisors (see below), whose sum is σ = 299358208054080. Its totient is φ = 146349231177600.

The previous prime is 222021220120213. The next prime is 222021220120229. The reversal of 222021220120221 is 122021022120222.

It is an interprime number because it is at equal distance from previous prime (222021220120213) and next prime (222021220120229).

It is not a de Polignac number, because 222021220120221 - 2³ = 222021220120213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021220120229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16283271 + ... + 26630571.

It is an arithmetic number, because the mean of its divisors is an integer number (18709888003380).

Almost surely, 2^{222021220120221} is an apocalyptic number.

It is an amenable number.

222021220120221 is a deficient number, since it is larger than the sum of its proper divisors (77336987933859).

222021220120221 is a wasteful number, since it uses less digits than its factorization.

222021220120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427756.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222021220120221 its reverse (122021022120222), we get a palindrome (344042242240443).

The spelling of 222021220120221 in words is "two hundred twenty-two trillion, twenty-one billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".