121224340025141 has 4 divisors (see below), whose sum is σ = 124500673539372. Its totient is φ = 117948006510912.

The previous prime is 121224340025101. The next prime is 121224340025177. The reversal of 121224340025141 is 141520043422121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52426505578225 + 68797834446916 = 7240615^2 + 8294446^2 .

It is a cyclic number.

It is not a de Polignac number, because 121224340025141 - 2¹⁸ = 121224339762997 is a prime.

It is a super-2 number, since 2×121224340025141² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121224340025098 and 121224340025107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121224340025101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638166757060 + ... + 1638166757133.

It is an arithmetic number, because the mean of its divisors is an integer number (31125168384843).

Almost surely, 2^{121224340025141} is an apocalyptic number.

It is an amenable number.

121224340025141 is a deficient number, since it is larger than the sum of its proper divisors (3276333514231).

121224340025141 is an equidigital number, since it uses as much as digits as its factorization.

121224340025141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276333514230.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 121224340025141 its reverse (141520043422121), we get a palindrome (262744383447262).

The spelling of 121224340025141 in words is "one hundred twenty-one trillion, two hundred twenty-four billion, three hundred forty million, twenty-five thousand, one hundred forty-one".