221121220022222 has 32 divisors (see below), whose sum is σ = 388124487045120. Its totient is φ = 93565724542560.

The previous prime is 221121220022177. The next prime is 221121220022239. The reversal of 221121220022222 is 222220022121122.

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, 7219562198 + ... + 7219592825.

It is an arithmetic number, because the mean of its divisors is an integer number (12128890220160).

Almost surely, 2^{221121220022222} is an apocalyptic number.

221121220022222 is a deficient number, since it is larger than the sum of its proper divisors (167003267022898).

221121220022222 is a wasteful number, since it uses less digits than its factorization.

221121220022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439155088.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221121220022222 its reverse (222220022121122), we get a palindrome (443341242143344).

The spelling of 221121220022222 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty million, twenty-two thousand, two hundred twenty-two".