21120656016146 has 32 divisors (see below), whose sum is σ = 34109627904000. Its totient is φ = 9776800211472.

The previous prime is 21120656016113. The next prime is 21120656016151. The reversal of 21120656016146 is 64161065602112.

It is a super-2 number, since 2×21120656016146² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7795466 + ... + 10149413.

It is an arithmetic number, because the mean of its divisors is an integer number (1065925872000).

Almost surely, 2^{21120656016146} is an apocalyptic number.

21120656016146 is a deficient number, since it is larger than the sum of its proper divisors (12988971887854).

21120656016146 is a wasteful number, since it uses less digits than its factorization.

21120656016146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17945606.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 21120656016146 in words is "twenty-one trillion, one hundred twenty billion, six hundred fifty-six million, sixteen thousand, one hundred forty-six".