1220222201212 has 48 divisors (see below), whose sum is σ = 2535622488000. Its totient is φ = 502714566144.

The previous prime is 1220222201201. The next prime is 1220222201227. The reversal of 1220222201212 is 2121022220221.

It is a super-2 number, since 2×1220222201212² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220222201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3095137 + ... + 3467032.

It is an arithmetic number, because the mean of its divisors is an integer number (52825468500).

Almost surely, 2^{1220222201212} is an apocalyptic number.

It is an amenable number.

1220222201212 is an abundant number, since it is smaller than the sum of its proper divisors (1315400286788).

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

1220222201212 is a wasteful number, since it uses less digits than its factorization.

1220222201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562438 (or 6562436 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220222201212 its reverse (2121022220221), we get a palindrome (3341244421433).

The spelling of 1220222201212 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".