221660106562 has 16 divisors (see below), whose sum is σ = 351235173600. Its totient is φ = 104623233120.

The previous prime is 221660106541. The next prime is 221660106587. The reversal of 221660106562 is 265601066122.

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, 10368612 + ... + 10389967.

It is an arithmetic number, because the mean of its divisors is an integer number (21952198350).

Almost surely, 2^221660106562 is an apocalyptic number.

221660106562 is a deficient number, since it is larger than the sum of its proper divisors (129575067038).

221660106562 is a wasteful number, since it uses less digits than its factorization.

221660106562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20758881.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 221660106562 in words is "two hundred twenty-one billion, six hundred sixty million, one hundred six thousand, five hundred sixty-two".