141221653 has 2 divisors, whose sum is σ = 141221654. Its totient is φ = 141221652.

The previous prime is 141221611. The next prime is 141221681. The reversal of 141221653 is 356122141.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125037124 + 16184529 = 11182^2 + 4023^2 .

It is a cyclic number.

It is not a de Polignac number, because 141221653 - 2⁹ = 141221141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141221603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70610826 + 70610827.

It is an arithmetic number, because the mean of its divisors is an integer number (70610827).

Almost surely, 2^141221653 is an apocalyptic number.

It is an amenable number.

141221653 is a deficient number, since it is larger than the sum of its proper divisors (1).

141221653 is an equidigital number, since it uses as much as digits as its factorization.

141221653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 141221653 is about 11883.6716969125. The cubic root of 141221653 is about 520.7553777612.

Adding to 141221653 its reverse (356122141), we get a palindrome (497343794).

The spelling of 141221653 in words is "one hundred forty-one million, two hundred twenty-one thousand, six hundred fifty-three".