121042341123 has 16 divisors (see below), whose sum is σ = 176081686272. Its totient is φ = 73350620000.

The previous prime is 121042341113. The next prime is 121042341179. The reversal of 121042341123 is 321143240121.

It is a cyclic number.

It is not a de Polignac number, because 121042341123 - 2¹⁸ = 121042078979 is a prime.

It is a super-2 number, since 2×121042341123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121042341093 and 121042341102.

It is not an unprimeable number, because it can be changed into a prime (121042341103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90493 + ... + 500273.

It is an arithmetic number, because the mean of its divisors is an integer number (11005105392).

Almost surely, 2^121042341123 is an apocalyptic number.

121042341123 is a deficient number, since it is larger than the sum of its proper divisors (55039345149).

121042341123 is a wasteful number, since it uses less digits than its factorization.

121042341123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418746.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121042341123 its reverse (321143240121), we get a palindrome (442185581244).

The spelling of 121042341123 in words is "one hundred twenty-one billion, forty-two million, three hundred forty-one thousand, one hundred twenty-three".