2102012220128 has 48 divisors (see below), whose sum is σ = 4356459954000. Its totient is φ = 995617723392.

The previous prime is 2102012220127. The next prime is 2102012220151. The reversal of 2102012220128 is 8210222102012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102012220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8776268 + ... + 9012596.

It is an arithmetic number, because the mean of its divisors is an integer number (90759582375).

Almost surely, 2^{2102012220128} is an apocalyptic number.

It is an amenable number.

2102012220128 is an abundant number, since it is smaller than the sum of its proper divisors (2254447733872).

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

2102012220128 is a wasteful number, since it uses less digits than its factorization.

2102012220128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250987 (or 250979 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 2102012220128 in words is "two trillion, one hundred two billion, twelve million, two hundred twenty thousand, one hundred twenty-eight".