2172221701716 has 96 divisors (see below), whose sum is σ = 5557749055488. Its totient is φ = 654865119360.

The previous prime is 2172221701673. The next prime is 2172221701729. The reversal of 2172221701716 is 6171071222712.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46102666 + ... + 46149758.

It is an arithmetic number, because the mean of its divisors is an integer number (57893219328).

Almost surely, 2^{2172221701716} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172221701716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2778874527744).

2172221701716 is an abundant number, since it is smaller than the sum of its proper divisors (3385527353772).

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

2172221701716 is a wasteful number, since it uses less digits than its factorization.

2172221701716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48901 (or 48899 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 39.

The spelling of 2172221701716 in words is "two trillion, one hundred seventy-two billion, two hundred twenty-one million, seven hundred one thousand, seven hundred sixteen".