121011241143 has 16 divisors (see below), whose sum is σ = 174787904480. Its totient is φ = 74468452032.

The previous prime is 121011241123. The next prime is 121011241159. The reversal of 121011241143 is 341142110121.

It is not a de Polignac number, because 121011241143 - 2¹² = 121011237047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011241123) 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 15 ways as a sum of consecutive naturals, for example, 9173446 + ... + 9186627.

It is an arithmetic number, because the mean of its divisors is an integer number (10924244030).

Almost surely, 2^121011241143 is an apocalyptic number.

121011241143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121011241143 is a deficient number, since it is larger than the sum of its proper divisors (53776663337).

121011241143 is an equidigital number, since it uses as much as digits as its factorization.

121011241143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18360115 (or 18360089 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121011241143 its reverse (341142110121), we get a palindrome (462153351264).

The spelling of 121011241143 in words is "one hundred twenty-one billion, eleven million, two hundred forty-one thousand, one hundred forty-three".