134251630221 has 4 divisors (see below), whose sum is σ = 179002173632. Its totient is φ = 89501086812.

The previous prime is 134251630147. The next prime is 134251630229. The reversal of 134251630221 is 122036152431.

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 not a de Polignac number, because 134251630221 - 2¹⁷ = 134251499149 is a prime.

It is a super-2 number, since 2×134251630221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134251630229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22375271701 + ... + 22375271706.

It is an arithmetic number, because the mean of its divisors is an integer number (44750543408).

Almost surely, 2^134251630221 is an apocalyptic number.

It is an amenable number.

134251630221 is a deficient number, since it is larger than the sum of its proper divisors (44750543411).

134251630221 is an equidigital number, since it uses as much as digits as its factorization.

134251630221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44750543410.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 134251630221 its reverse (122036152431), we get a palindrome (256287782652).

The spelling of 134251630221 in words is "one hundred thirty-four billion, two hundred fifty-one million, six hundred thirty thousand, two hundred twenty-one".