1212220120112 has 40 divisors (see below), whose sum is σ = 2404955150400. Its totient is φ = 591605985600.

The previous prime is 1212220120087. The next prime is 1212220120159. The reversal of 1212220120112 is 2110210222121.

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, 391139 + ... + 1605437.

It is an arithmetic number, because the mean of its divisors is an integer number (60123878760).

Almost surely, 2^{1212220120112} is an apocalyptic number.

It is an amenable number.

1212220120112 is a deficient number, since it is larger than the sum of its proper divisors (1192735030288).

1212220120112 is a wasteful number, since it uses less digits than its factorization.

1212220120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215801 (or 1215795 counting only the distinct ones).

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

Adding to 1212220120112 its reverse (2110210222121), we get a palindrome (3322430342233).

The spelling of 1212220120112 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty thousand, one hundred twelve".