141797221 has 4 divisors (see below), whose sum is σ = 150138252. Its totient is φ = 133456192.

The previous prime is 141797137. The next prime is 141797263. The reversal of 141797221 is 122797141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122797141 = 8821 ⋅13921.

It can be written as a sum of positive squares in 2 ways, for example, as 103530625 + 38266596 = 10175^2 + 6186^2 .

It is a cyclic number.

It is not a de Polignac number, because 141797221 - 2²⁷ = 7579493 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 (141797521) 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, 4170490 + ... + 4170523.

It is an arithmetic number, because the mean of its divisors is an integer number (37534563).

Almost surely, 2^141797221 is an apocalyptic number.

It is an amenable number.

141797221 is a deficient number, since it is larger than the sum of its proper divisors (8341031).

141797221 is an equidigital number, since it uses as much as digits as its factorization.

141797221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341030.

The product of its digits is 7056, while the sum is 34.

The square root of 141797221 is about 11907.8638302594. The cubic root of 141797221 is about 521.4618885251.

The spelling of 141797221 in words is "one hundred forty-one million, seven hundred ninety-seven thousand, two hundred twenty-one".