22211001221222 has 16 divisors (see below), whose sum is σ = 37517702943744. Its totient is φ = 9770235141000.

The previous prime is 22211001221209. The next prime is 22211001221257. The reversal of 22211001221222 is 22212210011222.

It is a junction number, because it is equal to n+sod(n) for n = 22211001221194 and 22211001221203.

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, 16283724554 + ... + 16283725917.

It is an arithmetic number, because the mean of its divisors is an integer number (2344856433984).

Almost surely, 2^{22211001221222} is an apocalyptic number.

22211001221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22211001221222 is a deficient number, since it is larger than the sum of its proper divisors (15306701722522).

22211001221222 is a wasteful number, since it uses less digits than its factorization.

22211001221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32567450515.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22211001221222 its reverse (22212210011222), we get a palindrome (44423211232444).

The spelling of 22211001221222 in words is "twenty-two trillion, two hundred eleven billion, one million, two hundred twenty-one thousand, two hundred twenty-two".