121041214145541 has 24 divisors (see below), whose sum is σ = 175054399995384. Its totient is φ = 80593951720320.

The previous prime is 121041214145531. The next prime is 121041214145543. The reversal of 121041214145541 is 145541412140121.

121041214145541 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 4 + 121 + 41 + 455 + 41 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22869876804516 + 98171337341025 = 4782246^2 + 9908145^2 .

It is not a de Polignac number, because 121041214145541 - 2⁷ = 121041214145413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121041214145496 and 121041214145505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121041214145543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357436195 + ... + 357774671.

It is an arithmetic number, because the mean of its divisors is an integer number (7293933333141).

Almost surely, 2^{121041214145541} is an apocalyptic number.

It is an amenable number.

121041214145541 is a deficient number, since it is larger than the sum of its proper divisors (54013185849843).

121041214145541 is a wasteful number, since it uses less digits than its factorization.

121041214145541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387701 (or 387698 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

Adding to 121041214145541 its reverse (145541412140121), we get a palindrome (266582626285662).

The spelling of 121041214145541 in words is "one hundred twenty-one trillion, forty-one billion, two hundred fourteen million, one hundred forty-five thousand, five hundred forty-one".