12221011202220 has 144 divisors (see below), whose sum is σ = 39727621402560. Its totient is φ = 3032993576448.

The previous prime is 12221011202173. The next prime is 12221011202263. The reversal of 12221011202220 is 2220211012221.

It is a happy number.

12221011202220 is a `hidden beast` number, since 1 + 22 + 210 + 11 + 202 + 220 = 666.

It is a super-2 number, since 2×12221011202220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12221011202193 and 12221011202202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39737835 + ... + 40044194.

It is an arithmetic number, because the mean of its divisors is an integer number (275886259740).

Almost surely, 2^{12221011202220} is an apocalyptic number.

12221011202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221011202220 is an abundant number, since it is smaller than the sum of its proper divisors (27506610200340).

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

12221011202220 is a wasteful number, since it uses less digits than its factorization.

12221011202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79782104 (or 79782099 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12221011202220 its reverse (2220211012221), we get a palindrome (14441222214441).

The spelling of 12221011202220 in words is "twelve trillion, two hundred twenty-one billion, eleven million, two hundred two thousand, two hundred twenty".