22212011211222 has 16 divisors (see below), whose sum is σ = 50770311340032. Its totient is φ = 6346288917480.

The previous prime is 22212011211167. The next prime is 22212011211301. The reversal of 22212011211222 is 22211211021222.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 264428704854 + ... + 264428704937.

It is an arithmetic number, because the mean of its divisors is an integer number (3173144458752).

Almost surely, 2^{22212011211222} is an apocalyptic number.

22212011211222 is an abundant number, since it is smaller than the sum of its proper divisors (28558300128810).

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

22212011211222 is a wasteful number, since it uses less digits than its factorization.

22212011211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528857409803.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22212011211222 its reverse (22211211021222), we get a palindrome (44423222232444).

The spelling of 22212011211222 in words is "twenty-two trillion, two hundred twelve billion, eleven million, two hundred eleven thousand, two hundred twenty-two".