12222100201220 has 96 divisors (see below), whose sum is σ = 33447629956608. Its totient is φ = 3640558344192.

The previous prime is 12222100201219. The next prime is 12222100201273. The reversal of 12222100201220 is 2210200122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197481992 + ... + 197543871.

It is an arithmetic number, because the mean of its divisors is an integer number (348412812048).

Almost surely, 2^{12222100201220} is an apocalyptic number.

12222100201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222100201220 is an abundant number, since it is smaller than the sum of its proper divisors (21225529755388).

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

12222100201220 is a wasteful number, since it uses less digits than its factorization.

12222100201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395025909 (or 395025907 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12222100201220 its reverse (2210200122221), we get a palindrome (14432300323441).

The spelling of 12222100201220 in words is "twelve trillion, two hundred twenty-two billion, one hundred million, two hundred one thousand, two hundred twenty".