121043503140550 has 24 divisors (see below), whose sum is σ = 225458463038400. Its totient is φ = 48349111536480.

The previous prime is 121043503140467. The next prime is 121043503140559. The reversal of 121043503140550 is 55041305340121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121043503140559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1707207190 + ... + 1707278089.

It is an arithmetic number, because the mean of its divisors is an integer number (9394102626600).

Almost surely, 2^{121043503140550} is an apocalyptic number.

121043503140550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121043503140550 is a deficient number, since it is larger than the sum of its proper divisors (104414959897850).

121043503140550 is a wasteful number, since it uses less digits than its factorization.

121043503140550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414486000 (or 3414485995 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 121043503140550 its reverse (55041305340121), we get a palindrome (176084808480671).

The spelling of 121043503140550 in words is "one hundred twenty-one trillion, forty-three billion, five hundred three million, one hundred forty thousand, five hundred fifty".