22012012212212 has 12 divisors (see below), whose sum is σ = 42022932405216. Its totient is φ = 10005460096440.

The previous prime is 22012012212193. The next prime is 22012012212217. The reversal of 22012012212212 is 21221221021022.

It is a super-2 number, since 2×22012012212212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012012212217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250136502368 + ... + 250136502455.

It is an arithmetic number, because the mean of its divisors is an integer number (3501911033768).

Almost surely, 2^{22012012212212} is an apocalyptic number.

22012012212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22012012212212 is a deficient number, since it is larger than the sum of its proper divisors (20010920193004).

22012012212212 is a wasteful number, since it uses less digits than its factorization.

22012012212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500273004838 (or 500273004836 counting only the distinct ones).

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

Adding to 22012012212212 its reverse (21221221021022), we get a palindrome (43233233233234).

The spelling of 22012012212212 in words is "twenty-two trillion, twelve billion, twelve million, two hundred twelve thousand, two hundred twelve".