134626542221 has 4 divisors (see below), whose sum is σ = 134628605532. Its totient is φ = 134624478912.

The previous prime is 134626542199. The next prime is 134626542247. The reversal of 134626542221 is 122245626431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23830096900 + 110796445321 = 154370^2 + 332861^2 .

It is a cyclic number.

It is not a de Polignac number, because 134626542221 - 2¹⁸ = 134626280077 is a prime.

It is a super-2 number, since 2×134626542221² (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 (134626442221) 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, 930476 + ... + 1065381.

It is an arithmetic number, because the mean of its divisors is an integer number (33657151383).

Almost surely, 2^134626542221 is an apocalyptic number.

It is an amenable number.

134626542221 is a deficient number, since it is larger than the sum of its proper divisors (2063311).

134626542221 is an equidigital number, since it uses as much as digits as its factorization.

134626542221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063310.

The product of its digits is 138240, while the sum is 38.

The spelling of 134626542221 in words is "one hundred thirty-four billion, six hundred twenty-six million, five hundred forty-two thousand, two hundred twenty-one".