12220212053420 has 192 divisors, whose sum is σ = 31639423205376. Its totient is φ = 3872384271360.

The previous prime is 12220212053419. The next prime is 12220212053437. The reversal of 12220212053420 is 2435021202221.

12220212053420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12220212053420.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65088722 + ... + 65276198.

It is an arithmetic number, because the mean of its divisors is an integer number (164788662528).

Almost surely, 2^{12220212053420} is an apocalyptic number.

12220212053420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220212053420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15819711602688).

12220212053420 is an abundant number, since it is smaller than the sum of its proper divisors (19419211151956).

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

12220212053420 is a wasteful number, since it uses less digits than its factorization.

12220212053420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188200 (or 188198 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12220212053420 its reverse (2435021202221), we get a palindrome (14655233255641).

The spelling of 12220212053420 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, fifty-three thousand, four hundred twenty".