141242221 has 4 divisors (see below), whose sum is σ = 141275200. Its totient is φ = 141209244.

The previous prime is 141242207. The next prime is 141242237. The reversal of 141242221 is 122242141.

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 a cyclic number.

It is not a de Polignac number, because 141242221 - 2²³ = 132853613 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 (141242201) 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, 8901 + ... + 19018.

It is an arithmetic number, because the mean of its divisors is an integer number (35318800).

Almost surely, 2^141242221 is an apocalyptic number.

It is an amenable number.

141242221 is a deficient number, since it is larger than the sum of its proper divisors (32979).

141242221 is an equidigital number, since it uses as much as digits as its factorization.

141242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32978.

The product of its digits is 256, while the sum is 19.

The square root of 141242221 is about 11884.5370545091. The cubic root of 141242221 is about 520.7806580598.

Adding to 141242221 its reverse (122242141), we get a palindrome (263484362).

The spelling of 141242221 in words is "one hundred forty-one million, two hundred forty-two thousand, two hundred twenty-one".