12420201004220 has 12 divisors (see below), whose sum is σ = 26082422108904. Its totient is φ = 4968080401680.

The previous prime is 12420201004219. The next prime is 12420201004229. The reversal of 12420201004220 is 2240010202421.

It is a super-2 number, since 2×12420201004220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 621010050211 = 12420201004220 / (1 + 2 + 4 + 2 + 0 + 2 + 0 + 1 + 0 + 0 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12420201004192 and 12420201004201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420201004229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310505025086 + ... + 310505025125.

It is an arithmetic number, because the mean of its divisors is an integer number (2173535175742).

Almost surely, 2^{12420201004220} is an apocalyptic number.

12420201004220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12420201004220 is an abundant number, since it is smaller than the sum of its proper divisors (13662221104684).

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

12420201004220 is a wasteful number, since it uses less digits than its factorization.

12420201004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621010050220 (or 621010050218 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12420201004220 its reverse (2240010202421), we get a palindrome (14660211206641).

The spelling of 12420201004220 in words is "twelve trillion, four hundred twenty billion, two hundred one million, four thousand, two hundred twenty".