121166153106243 has 8 divisors (see below), whose sum is σ = 184634138066688. Its totient is φ = 69237801774984.

The previous prime is 121166153106227. The next prime is 121166153106281. The reversal of 121166153106243 is 342601351661121.

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

It is not a de Polignac number, because 121166153106243 - 2⁴ = 121166153106227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121166153106195 and 121166153106204.

It is not an unprimeable number, because it can be changed into a prime (121166153146243) 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, 2884908407271 + ... + 2884908407312.

It is an arithmetic number, because the mean of its divisors is an integer number (23079267258336).

Almost surely, 2^{121166153106243} is an apocalyptic number.

121166153106243 is a deficient number, since it is larger than the sum of its proper divisors (63467984960445).

121166153106243 is an equidigital number, since it uses as much as digits as its factorization.

121166153106243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769816814593.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 121166153106243 in words is "one hundred twenty-one trillion, one hundred sixty-six billion, one hundred fifty-three million, one hundred six thousand, two hundred forty-three".