21622160120072 has 64 divisors (see below), whose sum is σ = 43112591884800. Its totient is φ = 10145100176640.

The previous prime is 21622160120069. The next prime is 21622160120081. The reversal of 21622160120072 is 27002106122612.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2455079 + ... + 7019382.

It is an arithmetic number, because the mean of its divisors is an integer number (673634248200).

Almost surely, 2^{21622160120072} is an apocalyptic number.

It is an amenable number.

21622160120072 is a deficient number, since it is larger than the sum of its proper divisors (21490431764728).

21622160120072 is a wasteful number, since it uses less digits than its factorization.

21622160120072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9474726 (or 9474722 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 21622160120072 its reverse (27002106122612), we get a palindrome (48624266242684).

The spelling of 21622160120072 in words is "twenty-one trillion, six hundred twenty-two billion, one hundred sixty million, one hundred twenty thousand, seventy-two".