222201221201212 has 24 divisors (see below), whose sum is σ = 424203021768960. Its totient is φ = 101000390714160.

The previous prime is 222201221201159. The next prime is 222201221201233. The reversal of 222201221201212 is 212102122102222.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 25655683 + ... + 33205669.

It is an arithmetic number, because the mean of its divisors is an integer number (17675125907040).

Almost surely, 2^{222201221201212} is an apocalyptic number.

222201221201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222201221201212 is a deficient number, since it is larger than the sum of its proper divisors (202001800567748).

222201221201212 is a wasteful number, since it uses less digits than its factorization.

222201221201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8218881 (or 8218879 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222201221201212 its reverse (212102122102222), we get a palindrome (434303343303434).

The spelling of 222201221201212 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".