12220221202220 has 12 divisors (see below), whose sum is σ = 25662464524704. Its totient is φ = 4888088480880.

The previous prime is 12220221202213. The next prime is 12220221202289. The reversal of 12220221202220 is 2220212202221.

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: 611011060111 = 12220221202220 / (1 + 2 + 2 + 2 + 0 + 2 + 2 + 1 + 2 + 0 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12220221202192 and 12220221202201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305505530036 + ... + 305505530075.

It is an arithmetic number, because the mean of its divisors is an integer number (2138538710392).

Almost surely, 2^{12220221202220} is an apocalyptic number.

12220221202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220221202220 is an abundant number, since it is smaller than the sum of its proper divisors (13442243322484).

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

12220221202220 is a wasteful number, since it uses less digits than its factorization.

12220221202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611011060120 (or 611011060118 counting only the distinct ones).

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

Adding to 12220221202220 its reverse (2220212202221), we get a palindrome (14440433404441).

It can be divided in two parts, 1222022 and 1202220, that added together give a palindrome (2424242).

The spelling of 12220221202220 in words is "twelve trillion, two hundred twenty billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty".