121588227428 has 48 divisors (see below), whose sum is σ = 220310798400. Its totient is φ = 58679935104.

The previous prime is 121588227389. The next prime is 121588227437. The reversal of 121588227428 is 824722885121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5036675 + ... + 5060757.

It is an arithmetic number, because the mean of its divisors is an integer number (4589808300).

Almost surely, 2^121588227428 is an apocalyptic number.

It is an amenable number.

121588227428 is a deficient number, since it is larger than the sum of its proper divisors (98722570972).

121588227428 is a wasteful number, since it uses less digits than its factorization.

121588227428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24476 (or 24474 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The spelling of 121588227428 in words is "one hundred twenty-one billion, five hundred eighty-eight million, two hundred twenty-seven thousand, four hundred twenty-eight".