121117429947 has 8 divisors (see below), whose sum is σ = 161519728960. Its totient is φ = 80730042120.

The previous prime is 121117429907. The next prime is 121117429949. The reversal of 121117429947 is 749924711121.

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

It is not a de Polignac number, because 121117429947 - 2²⁰ = 121116381371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121117429896 and 121117429905.

It is not an unprimeable number, because it can be changed into a prime (121117429949) 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, 3708829 + ... + 3741342.

It is an arithmetic number, because the mean of its divisors is an integer number (20189966120).

Almost surely, 2^121117429947 is an apocalyptic number.

121117429947 is a deficient number, since it is larger than the sum of its proper divisors (40402299013).

121117429947 is an equidigital number, since it uses as much as digits as its factorization.

121117429947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455593.

The product of its digits is 254016, while the sum is 48.

The spelling of 121117429947 in words is "one hundred twenty-one billion, one hundred seventeen million, four hundred twenty-nine thousand, nine hundred forty-seven".