141221137 has 4 divisors (see below), whose sum is σ = 142592320. Its totient is φ = 139849956.

The previous prime is 141221131. The next prime is 141221141. The reversal of 141221137 is 731122141.

It is a happy number.

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 141221137 - 2⁷ = 141221009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141221131) 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, 685437 + ... + 685642.

It is an arithmetic number, because the mean of its divisors is an integer number (35648080).

Almost surely, 2^141221137 is an apocalyptic number.

It is an amenable number.

141221137 is a deficient number, since it is larger than the sum of its proper divisors (1371183).

141221137 is a wasteful number, since it uses less digits than its factorization.

141221137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371182.

The product of its digits is 336, while the sum is 22.

The square root of 141221137 is about 11883.6499864309. The cubic root of 141221137 is about 520.7547435098.

Adding to 141221137 its reverse (731122141), we get a palindrome (872343278).

The spelling of 141221137 in words is "one hundred forty-one million, two hundred twenty-one thousand, one hundred thirty-seven".