2176221605072 has 40 divisors (see below), whose sum is σ = 4302874840200. Its totient is φ = 1066002370560.

The previous prime is 2176221605039. The next prime is 2176221605141. The reversal of 2176221605072 is 2705061226712.

It can be written as a sum of positive squares in 4 ways, for example, as 31355909776 + 2144865695296 = 177076^2 + 1464536^2 .

It is a super-2 number, since 2×2176221605072² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6078329 + ... + 6426392.

It is an arithmetic number, because the mean of its divisors is an integer number (107571871005).

Almost surely, 2^{2176221605072} is an apocalyptic number.

It is an amenable number.

2176221605072 is a deficient number, since it is larger than the sum of its proper divisors (2126653235128).

2176221605072 is a wasteful number, since it uses less digits than its factorization.

2176221605072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504951 (or 12504945 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 2176221605072 in words is "two trillion, one hundred seventy-six billion, two hundred twenty-one million, six hundred five thousand, seventy-two".