122221222221212 has 24 divisors (see below), whose sum is σ = 220799495290752. Its totient is φ = 59135880196800.

The previous prime is 122221222221211. The next prime is 122221222221229. The reversal of 122221222221212 is 212122222122221.

It is a super-2 number, since 2×122221222221212² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221222221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26354339 + ... + 30643002.

It is an arithmetic number, because the mean of its divisors is an integer number (9199978970448).

Almost surely, 2^{122221222221212} is an apocalyptic number.

It is an amenable number.

122221222221212 is a deficient number, since it is larger than the sum of its proper divisors (98578273069540).

122221222221212 is a wasteful number, since it uses less digits than its factorization.

122221222221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57014669 (or 57014667 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 122221222221212 its reverse (212122222122221), we get a palindrome (334343444343433).

The spelling of 122221222221212 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".