2171151016216 has 64 divisors (see below), whose sum is σ = 5085129934080. Its totient is φ = 846097211520.

The previous prime is 2171151016163. The next prime is 2171151016217. The reversal of 2171151016216 is 6126101511712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171151016217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22207570 + ... + 22305121.

It is an arithmetic number, because the mean of its divisors is an integer number (79455155220).

Almost surely, 2^{2171151016216} is an apocalyptic number.

2171151016216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2171151016216 is an abundant number, since it is smaller than the sum of its proper divisors (2913978917864).

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

2171151016216 is a wasteful number, since it uses less digits than its factorization.

2171151016216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44512784 (or 44512780 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 34.

Adding to 2171151016216 its reverse (6126101511712), we get a palindrome (8297252527928).

The spelling of 2171151016216 in words is "two trillion, one hundred seventy-one billion, one hundred fifty-one million, sixteen thousand, two hundred sixteen".