222220220010221 has 16 divisors (see below), whose sum is σ = 232161314019840. Its totient is φ = 212431055860800.

The previous prime is 222220220010199. The next prime is 222220220010329. The reversal of 222220220010221 is 122010022022222.

It is not a de Polignac number, because 222220220010221 - 2⁴⁶ = 151851475832557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222220220010193 and 222220220010202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220220015221) 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, 361210340 + ... + 361825026.

It is an arithmetic number, because the mean of its divisors is an integer number (14510082126240).

Almost surely, 2^{222220220010221} is an apocalyptic number.

It is an amenable number.

222220220010221 is a deficient number, since it is larger than the sum of its proper divisors (9941094009619).

222220220010221 is a wasteful number, since it uses less digits than its factorization.

222220220010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738244.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222220220010221 its reverse (122010022022222), we get a palindrome (344230242032443).

The spelling of 222220220010221 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred twenty million, ten thousand, two hundred twenty-one".