221221021102222 has 32 divisors (see below), whose sum is σ = 355781697258240. Its totient is φ = 102912060746880.

The previous prime is 221221021102187. The next prime is 221221021102261. The reversal of 221221021102222 is 222201120122122.

It is a junction number, because it is equal to n+sod(n) for n = 221221021102193 and 221221021102202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231558072 + ... + 232511467.

It is an arithmetic number, because the mean of its divisors is an integer number (11118178039320).

Almost surely, 2^{221221021102222} is an apocalyptic number.

221221021102222 is a deficient number, since it is larger than the sum of its proper divisors (134560676156018).

221221021102222 is a wasteful number, since it uses less digits than its factorization.

221221021102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464069848.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221221021102222 its reverse (222201120122122), we get a palindrome (443422141224344).

The spelling of 221221021102222 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, one hundred two thousand, two hundred twenty-two".