134445226121 has 4 divisors (see below), whose sum is σ = 142353768852. Its totient is φ = 126536683392.

The previous prime is 134445226109. The next prime is 134445226129. The reversal of 134445226121 is 121622544431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121622544431 = 19 ⋅6401186549.

It can be written as a sum of positive squares in 2 ways, for example, as 50249498896 + 84195727225 = 224164^2 + 290165^2 .

It is a cyclic number.

It is not a de Polignac number, because 134445226121 - 2⁶ = 134445226057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134445226129) 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, 3954271340 + ... + 3954271373.

It is an arithmetic number, because the mean of its divisors is an integer number (35588442213).

Almost surely, 2^134445226121 is an apocalyptic number.

It is an amenable number.

134445226121 is a deficient number, since it is larger than the sum of its proper divisors (7908542731).

134445226121 is an equidigital number, since it uses as much as digits as its factorization.

134445226121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908542730.

The product of its digits is 46080, while the sum is 35.

The spelling of 134445226121 in words is "one hundred thirty-four billion, four hundred forty-five million, two hundred twenty-six thousand, one hundred twenty-one".