1220211201212 has 12 divisors (see below), whose sum is σ = 2204252492736. Its totient is φ = 590424774720.

The previous prime is 1220211201199. The next prime is 1220211201269. The reversal of 1220211201212 is 2121021120221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4920206333 + ... + 4920206580.

It is an arithmetic number, because the mean of its divisors is an integer number (183687707728).

Almost surely, 2^{1220211201212} is an apocalyptic number.

It is an amenable number.

1220211201212 is a deficient number, since it is larger than the sum of its proper divisors (984041291524).

1220211201212 is a wasteful number, since it uses less digits than its factorization.

1220211201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9840412948 (or 9840412946 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220211201212 its reverse (2121021120221), we get a palindrome (3341232321433).

The spelling of 1220211201212 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred twelve".