121123772328 has 96 divisors (see below), whose sum is σ = 347182329600. Its totient is φ = 35076547584.

The previous prime is 121123772317. The next prime is 121123772359. The reversal of 121123772328 is 823277321121.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 809368 + ... + 947271.

It is an arithmetic number, because the mean of its divisors is an integer number (3616482600).

Almost surely, 2^121123772328 is an apocalyptic number.

It is an amenable number.

121123772328 is an abundant number, since it is smaller than the sum of its proper divisors (226058557272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121123772328 is a wasteful number, since it uses less digits than its factorization.

121123772328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756691 (or 1756674 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The spelling of 121123772328 in words is "one hundred twenty-one billion, one hundred twenty-three million, seven hundred seventy-two thousand, three hundred twenty-eight".