1212221010112 has 84 divisors (see below), whose sum is σ = 2888501841984. Its totient is φ = 502764433920.

The previous prime is 1212221010101. The next prime is 1212221010137. The reversal of 1212221010112 is 2110101222121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6137463 + ... + 6331894.

Almost surely, 2^{1212221010112} is an apocalyptic number.

It is an amenable number.

1212221010112 is an abundant number, since it is smaller than the sum of its proper divisors (1676280831872).

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

1212221010112 is a wasteful number, since it uses less digits than its factorization.

1212221010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12469414 (or 12469397 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212221010112 its reverse (2110101222121), we get a palindrome (3322322232233).

The spelling of 1212221010112 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, ten thousand, one hundred twelve".