221135006975 has 6 divisors (see below), whose sum is σ = 274207408680. Its totient is φ = 176908005560.

The previous prime is 221135006969. The next prime is 221135006977. The reversal of 221135006975 is 579600531122.

It is not a de Polignac number, because 221135006975 - 2⁴ = 221135006959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221135006977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4422700115 + ... + 4422700164.

It is an arithmetic number, because the mean of its divisors is an integer number (45701234780).

Almost surely, 2^221135006975 is an apocalyptic number.

221135006975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221135006975 is a deficient number, since it is larger than the sum of its proper divisors (53072401705).

221135006975 is an equidigital number, since it uses as much as digits as its factorization.

221135006975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8845400289 (or 8845400284 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 221135006975 in words is "two hundred twenty-one billion, one hundred thirty-five million, six thousand, nine hundred seventy-five".