141212221 has 4 divisors (see below), whose sum is σ = 141951744. Its totient is φ = 140472700.

The previous prime is 141212219. The next prime is 141212231. The reversal of 141212221 is 122212141.

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 141212221 - 2¹ = 141212219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 141212195 and 141212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141212231) 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, 369475 + ... + 369856.

It is an arithmetic number, because the mean of its divisors is an integer number (35487936).

Almost surely, 2^141212221 is an apocalyptic number.

It is an amenable number.

141212221 is a deficient number, since it is larger than the sum of its proper divisors (739523).

141212221 is an equidigital number, since it uses as much as digits as its factorization.

141212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739522.

The product of its digits is 64, while the sum is 16.

The square root of 141212221 is about 11883.2748432408. The cubic root of 141212221 is about 520.7437839913.

Adding to 141212221 its reverse (122212141), we get a palindrome (263424362).

The spelling of 141212221 in words is "one hundred forty-one million, two hundred twelve thousand, two hundred twenty-one".