214121541 has 4 divisors (see below), whose sum is σ = 285495392. Its totient is φ = 142747692.

The previous prime is 214121489. The next prime is 214121543. The reversal of 214121541 is 145121412.

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.

It is not a de Polignac number, because 214121541 - 2¹⁸ = 213859397 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 (214121543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35686921 + ... + 35686926.

It is an arithmetic number, because the mean of its divisors is an integer number (71373848).

Almost surely, 2^214121541 is an apocalyptic number.

It is an amenable number.

214121541 is a deficient number, since it is larger than the sum of its proper divisors (71373851).

214121541 is an equidigital number, since it uses as much as digits as its factorization.

214121541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71373850.

The product of its digits is 320, while the sum is 21.

The square root of 214121541 is about 14632.8924345121. The cubic root of 214121541 is about 598.2556195875.

Adding to 214121541 its reverse (145121412), we get a palindrome (359242953).

The spelling of 214121541 in words is "two hundred fourteen million, one hundred twenty-one thousand, five hundred forty-one".