221525701132616 has 16 divisors (see below), whose sum is σ = 421560102902640. Its totient is φ = 109109673691920.

The previous prime is 221525701132591. The next prime is 221525701132661. The reversal of 221525701132616 is 616231107525122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206647108730 + ... + 206647109801.

It is an arithmetic number, because the mean of its divisors is an integer number (26347506431415).

Almost surely, 2^{221525701132616} is an apocalyptic number.

It is an amenable number.

221525701132616 is a deficient number, since it is larger than the sum of its proper divisors (200034401770024).

221525701132616 is a wasteful number, since it uses less digits than its factorization.

221525701132616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413294218604 (or 413294218600 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

Adding to 221525701132616 its reverse (616231107525122), we get a palindrome (837756808657738).

The spelling of 221525701132616 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, seven hundred one million, one hundred thirty-two thousand, six hundred sixteen".