12210000211220 has 36 divisors (see below), whose sum is σ = 29827286232660. Its totient is φ = 4186285786368.

The previous prime is 12210000211193. The next prime is 12210000211319. The reversal of 12210000211220 is 2211200001221.

It can be written as a sum of positive squares in 2 ways, for example, as 1656312372484 + 10553687838736 = 1286978^2 + 3248644^2 .

It is a super-2 number, since 2×12210000211220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12210000211195 and 12210000211204.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6229590965 + ... + 6229592924.

It is an arithmetic number, because the mean of its divisors is an integer number (828535728685).

Almost surely, 2^{12210000211220} is an apocalyptic number.

12210000211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210000211220 is an abundant number, since it is smaller than the sum of its proper divisors (17617286021440).

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

12210000211220 is a wasteful number, since it uses less digits than its factorization.

12210000211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12459183912 (or 12459183903 counting only the distinct ones).

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

Adding to 12210000211220 its reverse (2211200001221), we get a palindrome (14421200212441).

The spelling of 12210000211220 in words is "twelve trillion, two hundred ten billion, two hundred eleven thousand, two hundred twenty".