20212241 has 4 divisors (see below), whose sum is σ = 23099712. Its totient is φ = 17324772.

The previous prime is 20212223. The next prime is 20212259. The reversal of 20212241 is 14221202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14221202 = 2 ⋅7110601.

It is an interprime number because it is at equal distance from previous prime (20212223) and next prime (20212259).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212261) 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, 1443725 + ... + 1443738.

It is an arithmetic number, because the mean of its divisors is an integer number (5774928).

Almost surely, 2^20212241 is an apocalyptic number.

It is an amenable number.

20212241 is a deficient number, since it is larger than the sum of its proper divisors (2887471).

20212241 is an equidigital number, since it uses as much as digits as its factorization.

20212241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887470.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20212241 is about 4495.8025979796. The cubic root of 20212241 is about 272.3985695502.

Adding to 20212241 its reverse (14221202), we get a palindrome (34433443).

The spelling of 20212241 in words is "twenty million, two hundred twelve thousand, two hundred forty-one".