12211212000020 has 48 divisors (see below), whose sum is σ = 27976942824768. Its totient is φ = 4440096879360.

The previous prime is 12211211999953. The next prime is 12211212000109. The reversal of 12211212000020 is 2000021211221.

It is a super-2 number, since 2×12211212000020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211211999959 and 12211212000004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707087 + ... + 4992233.

It is an arithmetic number, because the mean of its divisors is an integer number (582852975516).

Almost surely, 2^{12211212000020} is an apocalyptic number.

12211212000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211212000020 is an abundant number, since it is smaller than the sum of its proper divisors (15765730824748).

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

12211212000020 is a wasteful number, since it uses less digits than its factorization.

12211212000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298120 (or 4298118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12211212000020 its reverse (2000021211221), we get a palindrome (14211233211241).

The spelling of 12211212000020 in words is "twelve trillion, two hundred eleven billion, two hundred twelve million, twenty", and thus it is an aban number.