221022221221222 has 8 divisors (see below), whose sum is σ = 331562830338000. Its totient is φ = 110501277775224.

The previous prime is 221022221221183. The next prime is 221022221221223. The reversal of 221022221221222 is 222122122220122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022221221223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4916389597 + ... + 4916434552.

It is an arithmetic number, because the mean of its divisors is an integer number (41445353792250).

Almost surely, 2^{221022221221222} is an apocalyptic number.

221022221221222 is a deficient number, since it is larger than the sum of its proper divisors (110540609116778).

221022221221222 is a wasteful number, since it uses less digits than its factorization.

221022221221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832835390.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 221022221221222 its reverse (222122122220122), we get a palindrome (443144343441344).

The spelling of 221022221221222 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".