12210202420 has 48 divisors (see below), whose sum is σ = 27656133120. Its totient is φ = 4501478016.

The previous prime is 12210202391. The next prime is 12210202423. The reversal of 12210202420 is 2420201221.

It is a junction number, because it is equal to n+sod(n) for n = 12210202394 and 12210202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210202423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135709 + ... + 206971.

It is an arithmetic number, because the mean of its divisors is an integer number (576169440).

Almost surely, 2^12210202420 is an apocalyptic number.

12210202420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210202420 is an abundant number, since it is smaller than the sum of its proper divisors (15445930700).

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

12210202420 is a wasteful number, since it uses less digits than its factorization.

12210202420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71944 (or 71942 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12210202420 its reverse (2420201221), we get a palindrome (14630403641).

The spelling of 12210202420 in words is "twelve billion, two hundred ten million, two hundred two thousand, four hundred twenty".