1220221012012 has 12 divisors (see below), whose sum is σ = 2171579767560. Its totient is φ = 599769649856.

The previous prime is 1220221011949. The next prime is 1220221012097. The reversal of 1220221012012 is 2102101220221.

It is a happy 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, 2585213773 + ... + 2585214244.

It is an arithmetic number, because the mean of its divisors is an integer number (180964980630).

Almost surely, 2^{1220221012012} is an apocalyptic number.

It is an amenable number.

1220221012012 is a deficient number, since it is larger than the sum of its proper divisors (951358755548).

1220221012012 is a wasteful number, since it uses less digits than its factorization.

1220221012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170428080 (or 5170428078 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220221012012 its reverse (2102101220221), we get a palindrome (3322322232233).

The spelling of 1220221012012 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twelve thousand, twelve".