221116653562125 has 16 divisors (see below), whose sum is σ = 367938111528000. Its totient is φ = 117928881899600.

The previous prime is 221116653562099. The next prime is 221116653562213. The reversal of 221116653562125 is 521265356611122.

It is not a de Polignac number, because 221116653562125 - 2⁵ = 221116653562093 is a prime.

It is a congruent number.

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, 294822204375 + ... + 294822205124.

It is an arithmetic number, because the mean of its divisors is an integer number (22996131970500).

Almost surely, 2^{221116653562125} is an apocalyptic number.

221116653562125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221116653562125 is a deficient number, since it is larger than the sum of its proper divisors (146821457965875).

221116653562125 is an equidigital number, since it uses as much as digits as its factorization.

221116653562125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589644409517 (or 589644409507 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 48.

The spelling of 221116653562125 in words is "two hundred twenty-one trillion, one hundred sixteen billion, six hundred fifty-three million, five hundred sixty-two thousand, one hundred twenty-five".