221950741 has 4 divisors (see below), whose sum is σ = 221997132. Its totient is φ = 221904352.

The previous prime is 221950711. The next prime is 221950763. The reversal of 221950741 is 147059122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128731716 + 93219025 = 11346^2 + 9655^2 .

It is a cyclic number.

It is not a de Polignac number, because 221950741 - 2²⁵ = 188396309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221950711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15070 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (55499283).

Almost surely, 2^221950741 is an apocalyptic number.

It is an amenable number.

221950741 is a deficient number, since it is larger than the sum of its proper divisors (46391).

221950741 is an equidigital number, since it uses as much as digits as its factorization.

221950741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46390.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 221950741 is about 14898.0113102387. The cubic root of 221950741 is about 605.4601067053.

The spelling of 221950741 in words is "two hundred twenty-one million, nine hundred fifty thousand, seven hundred forty-one".