1220221102222 has 8 divisors (see below), whose sum is σ = 1830795862896. Its totient is φ = 609955814592.

The previous prime is 1220221102201. The next prime is 1220221102319. The reversal of 1220221102222 is 2222011220221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1220221102222³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220221102222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77358403 + ... + 77374174.

It is an arithmetic number, because the mean of its divisors is an integer number (228849482862).

Almost surely, 2^{1220221102222} is an apocalyptic number.

1220221102222 is a deficient number, since it is larger than the sum of its proper divisors (610574760674).

1220221102222 is a wasteful number, since it uses less digits than its factorization.

1220221102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154736522.

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

Adding to 1220221102222 its reverse (2222011220221), we get a palindrome (3442232322443).

The spelling of 1220221102222 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred two thousand, two hundred twenty-two".