221112021021222 has 16 divisors (see below), whose sum is σ = 442226422193472. Its totient is φ = 73703610315240.

The previous prime is 221112021021181. The next prime is 221112021021233. The reversal of 221112021021222 is 222120120211122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97964148 + ... + 100195799.

It is an arithmetic number, because the mean of its divisors is an integer number (27639151387092).

Almost surely, 2^{221112021021222} is an apocalyptic number.

221112021021222 is an abundant number, since it is smaller than the sum of its proper divisors (221114401172250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221112021021222 is a wasteful number, since it uses less digits than its factorization.

221112021021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198345923.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221112021021222 its reverse (222120120211122), we get a palindrome (443232141232344).

The spelling of 221112021021222 in words is "two hundred twenty-one trillion, one hundred twelve billion, twenty-one million, twenty-one thousand, two hundred twenty-two".