2171222616 has 32 divisors (see below), whose sum is σ = 5451366960. Its totient is φ = 720632832.

The previous prime is 2171222591. The next prime is 2171222617. The reversal of 2171222616 is 6162221712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171222617) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 188545 + ... + 199728.

Almost surely, 2^2171222616 is an apocalyptic number.

It is an amenable number.

2171222616 is an abundant number, since it is smaller than the sum of its proper divisors (3280144344).

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

2171222616 is a wasteful number, since it uses less digits than its factorization.

2171222616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388515 (or 388511 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 2171222616 is about 46596.3798593839. The cubic root of 2171222616 is about 1294.8956880445.

The spelling of 2171222616 in words is "two billion, one hundred seventy-one million, two hundred twenty-two thousand, six hundred sixteen".