22212122121222 has 64 divisors (see below), whose sum is σ = 48858475670784. Its totient is φ = 6676199792640.

The previous prime is 22212122121221. The next prime is 22212122121223.

It is a happy number.

22212122121222 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (22212122121221) and next prime (22212122121223).

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 = 22212122121192 and 22212122121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212122121221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1705513 + ... + 6879899.

It is an arithmetic number, because the mean of its divisors is an integer number (763413682356).

Almost surely, 2^{22212122121222} is an apocalyptic number.

22212122121222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22212122121222 is an abundant number, since it is smaller than the sum of its proper divisors (26646353549562).

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

22212122121222 is a wasteful number, since it uses less digits than its factorization.

22212122121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174933.

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

It can be divided in two parts, 2221212 and 2121222, that added together give a palindrome (4342434).

The spelling of 22212122121222 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".