134412145221 has 4 divisors (see below), whose sum is σ = 179216193632. Its totient is φ = 89608096812.

The previous prime is 134412145201. The next prime is 134412145229. The reversal of 134412145221 is 122541214431.

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 134412145221 - 2⁶ = 134412145157 is a prime.

It is a super-2 number, since 2×134412145221² (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 (134412145229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22402024201 + ... + 22402024206.

It is an arithmetic number, because the mean of its divisors is an integer number (44804048408).

Almost surely, 2^134412145221 is an apocalyptic number.

It is an amenable number.

134412145221 is a deficient number, since it is larger than the sum of its proper divisors (44804048411).

134412145221 is an equidigital number, since it uses as much as digits as its factorization.

134412145221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44804048410.

The product of its digits is 7680, while the sum is 30.

Adding to 134412145221 its reverse (122541214431), we get a palindrome (256953359652).

The spelling of 134412145221 in words is "one hundred thirty-four billion, four hundred twelve million, one hundred forty-five thousand, two hundred twenty-one".