121301145163143 has 48 divisors (see below), whose sum is σ = 197661278011392. Its totient is φ = 71016637896000.

The previous prime is 121301145163091. The next prime is 121301145163153. The reversal of 121301145163143 is 341361541103121.

It is a happy number.

121301145163143 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 0 + 1 + 1 + 451 + 63 + 143 = 666.

It is not a de Polignac number, because 121301145163143 - 2¹⁴ = 121301145146759 is a prime.

It is a super-4 number, since 4×121301145163143⁴ (a number of 57 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121301145163098 and 121301145163107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121301145163153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33770503 + ... + 37189368.

It is an arithmetic number, because the mean of its divisors is an integer number (4117943291904).

Almost surely, 2^{121301145163143} is an apocalyptic number.

121301145163143 is a deficient number, since it is larger than the sum of its proper divisors (76360132848249).

121301145163143 is a wasteful number, since it uses less digits than its factorization.

121301145163143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70960476 (or 70960473 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 121301145163143 its reverse (341361541103121), we get a palindrome (462662686266264).

The spelling of 121301145163143 in words is "one hundred twenty-one trillion, three hundred one billion, one hundred forty-five million, one hundred sixty-three thousand, one hundred forty-three".