222110212200221 has 16 divisors (see below), whose sum is σ = 239474070808704. Its totient is φ = 205258549085184.

The previous prime is 222110212200193. The next prime is 222110212200277. The reversal of 222110212200221 is 122002212011222.

It is a cyclic number.

It is not a de Polignac number, because 222110212200221 - 2³⁸ = 221835334293277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222110212200193 and 222110212200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222110212200281) 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, 540085025 + ... + 540496118.

It is an arithmetic number, because the mean of its divisors is an integer number (14967129425544).

Almost surely, 2^{222110212200221} is an apocalyptic number.

It is an amenable number.

222110212200221 is a deficient number, since it is larger than the sum of its proper divisors (17363858608483).

222110212200221 is a wasteful number, since it uses less digits than its factorization.

222110212200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080581380.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222110212200221 its reverse (122002212011222), we get a palindrome (344112424211443).

The spelling of 222110212200221 in words is "two hundred twenty-two trillion, one hundred ten billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".