121671667227 has 16 divisors (see below), whose sum is σ = 176985076608. Its totient is φ = 73737026880.

The previous prime is 121671667207. The next prime is 121671667241. The reversal of 121671667227 is 722766176121.

It is not a de Polignac number, because 121671667227 - 2¹² = 121671663131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121671667207) 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 15 ways as a sum of consecutive naturals, for example, 778623 + ... + 921735.

It is an arithmetic number, because the mean of its divisors is an integer number (11061567288).

Almost surely, 2^121671667227 is an apocalyptic number.

121671667227 is a deficient number, since it is larger than the sum of its proper divisors (55313409381).

121671667227 is a wasteful number, since it uses less digits than its factorization.

121671667227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168890.

The product of its digits is 592704, while the sum is 48.

The spelling of 121671667227 in words is "one hundred twenty-one billion, six hundred seventy-one million, six hundred sixty-seven thousand, two hundred twenty-seven".