220154213 has 4 divisors (see below), whose sum is σ = 220703628. Its totient is φ = 219604800.

The previous prime is 220154191. The next prime is 220154239. The reversal of 220154213 is 312451022.

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 200987329 + 19166884 = 14177^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 220154213 - 2⁶ = 220154149 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 (220154713) 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, 274106 + ... + 274907.

It is an arithmetic number, because the mean of its divisors is an integer number (55175907).

Almost surely, 2^220154213 is an apocalyptic number.

It is an amenable number.

220154213 is a deficient number, since it is larger than the sum of its proper divisors (549415).

220154213 is an equidigital number, since it uses as much as digits as its factorization.

220154213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549414.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 220154213 is about 14837.5945826808. The cubic root of 220154213 is about 603.8220944761.

The spelling of 220154213 in words is "two hundred twenty million, one hundred fifty-four thousand, two hundred thirteen".