121777046147 has 8 divisors (see below), whose sum is σ = 124614673920. Its totient is φ = 118939673160.

The previous prime is 121777046119. The next prime is 121777046173. The reversal of 121777046147 is 741640777121.

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-121777046147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121777046177) 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, 1185254 + ... + 1283892.

It is an arithmetic number, because the mean of its divisors is an integer number (15576834240).

Almost surely, 2^121777046147 is an apocalyptic number.

121777046147 is a deficient number, since it is larger than the sum of its proper divisors (2837627773).

121777046147 is an equidigital number, since it uses as much as digits as its factorization.

121777046147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127393.

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 121777046147 in words is "one hundred twenty-one billion, seven hundred seventy-seven million, forty-six thousand, one hundred forty-seven".