211222122222012 has 96 divisors (see below), whose sum is σ = 546885974073600. Its totient is φ = 62917052736000.

The previous prime is 211222122222011. The next prime is 211222122222047. The reversal of 211222122222012 is 210222221222112.

It is a happy number.

It is a super-2 number, since 2×211222122222012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222122222011) 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, 55136937 + ... + 58843232.

It is an arithmetic number, because the mean of its divisors is an integer number (5696728896600).

Almost surely, 2^{211222122222012} is an apocalyptic number.

211222122222012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211222122222012 is an abundant number, since it is smaller than the sum of its proper divisors (335663851851588).

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

211222122222012 is a wasteful number, since it uses less digits than its factorization.

211222122222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113980427 (or 113980425 counting only the distinct ones).

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

Adding to 211222122222012 its reverse (210222221222112), we get a palindrome (421444343444124).

The spelling of 211222122222012 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-two thousand, twelve".