134927987221 has 8 divisors (see below), whose sum is σ = 140816882304. Its totient is φ = 129040963920.

The previous prime is 134927987137. The next prime is 134927987251. The reversal of 134927987221 is 122789729431.

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

It is a cyclic number.

It is not a de Polignac number, because 134927987221 - 2⁷ = 134927987093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134927987251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319626 + ... + 609931.

It is an arithmetic number, because the mean of its divisors is an integer number (17602110288).

Almost surely, 2^134927987221 is an apocalyptic number.

It is an amenable number.

134927987221 is a deficient number, since it is larger than the sum of its proper divisors (5888895083).

134927987221 is an equidigital number, since it uses as much as digits as its factorization.

134927987221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935891.

The product of its digits is 3048192, while the sum is 55.

The spelling of 134927987221 in words is "one hundred thirty-four billion, nine hundred twenty-seven million, nine hundred eighty-seven thousand, two hundred twenty-one".