134220404021 has 8 divisors (see below), whose sum is σ = 146560016064. Its totient is φ = 121903751520.

The previous prime is 134220403987. The next prime is 134220404039. The reversal of 134220404021 is 120404022431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134220404021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134220404081) 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 7 ways as a sum of consecutive naturals, for example, 5727656 + ... + 5751041.

It is an arithmetic number, because the mean of its divisors is an integer number (18320002008).

Almost surely, 2^134220404021 is an apocalyptic number.

134220404021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134220404021 is a deficient number, since it is larger than the sum of its proper divisors (12339612043).

134220404021 is a wasteful number, since it uses less digits than its factorization.

134220404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11479771.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 134220404021 its reverse (120404022431), we get a palindrome (254624426452).

The spelling of 134220404021 in words is "one hundred thirty-four billion, two hundred twenty million, four hundred four thousand, twenty-one".