12220213620 has 24 divisors (see below), whose sum is σ = 34216598304. Its totient is φ = 3258723616.

The previous prime is 12220213601. The next prime is 12220213669. The reversal of 12220213620 is 2631202221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101835054 + ... + 101835173.

It is an arithmetic number, because the mean of its divisors is an integer number (1425691596).

Almost surely, 2^12220213620 is an apocalyptic number.

12220213620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220213620 is an abundant number, since it is smaller than the sum of its proper divisors (21996384684).

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

12220213620 is a wasteful number, since it uses less digits than its factorization.

12220213620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203670239 (or 203670237 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12220213620 its reverse (2631202221), we get a palindrome (14851415841).

The spelling of 12220213620 in words is "twelve billion, two hundred twenty million, two hundred thirteen thousand, six hundred twenty".