22221211212222 has 32 divisors (see below), whose sum is σ = 49792984343424. Its totient is φ = 6551708464800.

The previous prime is 22221211212217. The next prime is 22221211212247.

It is a happy number.

22221211212222 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22221211212192 and 22221211212201.

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, 4549795104 + ... + 4549799987.

It is an arithmetic number, because the mean of its divisors is an integer number (1556030760732).

Almost surely, 2^{22221211212222} is an apocalyptic number.

22221211212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221211212222 is an abundant number, since it is smaller than the sum of its proper divisors (27571773131202).

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

22221211212222 is a wasteful number, since it uses less digits than its factorization.

22221211212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9099595144.

The product of its digits is 1024, while the sum is 24.

It can be divided in two parts, 2222121 and 1212222, that added together give a palindrome (3434343).

The spelling of 22221211212222 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty-two".