221222011001222 has 32 divisors (see below), whose sum is σ = 413714935494144. Its totient is φ = 86190176232000.

The previous prime is 221222011001213. The next prime is 221222011001273. The reversal of 221222011001222 is 222100110222122.

It is a junction number, because it is equal to n+sod(n) for n = 221222011001194 and 221222011001203.

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, 68080847 + ... + 71256197.

It is an arithmetic number, because the mean of its divisors is an integer number (12928591734192).

Almost surely, 2^{221222011001222} is an apocalyptic number.

221222011001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221222011001222 is a deficient number, since it is larger than the sum of its proper divisors (192492924492922).

221222011001222 is a wasteful number, since it uses less digits than its factorization.

221222011001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627764.

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

Adding to 221222011001222 its reverse (222100110222122), we get a palindrome (443322121223344).

The spelling of 221222011001222 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, eleven million, one thousand, two hundred twenty-two".