12220100023212 has 48 divisors (see below), whose sum is σ = 31871451870720. Its totient is φ = 4048975251216.

The previous prime is 12220100023207. The next prime is 12220100023217. The reversal of 12220100023212 is 21232000102221.

It is an interprime number because it is at equal distance from previous prime (12220100023207) and next prime (12220100023217).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12220100023217) 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 15 ways as a sum of consecutive naturals, for example, 338751648 + ... + 338787719.

It is an arithmetic number, because the mean of its divisors is an integer number (663988580640).

Almost surely, 2^{12220100023212} is an apocalyptic number.

12220100023212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220100023212 is an abundant number, since it is smaller than the sum of its proper divisors (19651351847508).

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

12220100023212 is a wasteful number, since it uses less digits than its factorization.

12220100023212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677539547 (or 677539539 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12220100023212 its reverse (21232000102221), we get a palindrome (33452100125433).

The spelling of 12220100023212 in words is "twelve trillion, two hundred twenty billion, one hundred million, twenty-three thousand, two hundred twelve".