2212121021012 has 48 divisors (see below), whose sum is σ = 4466502340608. Its totient is φ = 939020947200.

The previous prime is 2212121021009. The next prime is 2212121021063. The reversal of 2212121021012 is 2101201212122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1619618 + ... + 2654694.

It is an arithmetic number, because the mean of its divisors is an integer number (93052132096).

Almost surely, 2^{2212121021012} is an apocalyptic number.

It is an amenable number.

2212121021012 is an abundant number, since it is smaller than the sum of its proper divisors (2254381319596).

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

2212121021012 is a wasteful number, since it uses less digits than its factorization.

2212121021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035816 (or 1035814 counting only the distinct ones).

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

Adding to 2212121021012 its reverse (2101201212122), we get a palindrome (4313322233134).

The spelling of 2212121021012 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, twenty-one thousand, twelve".