121413031243 has 16 divisors (see below), whose sum is σ = 139558588416. Its totient is φ = 103469002560.

The previous prime is 121413031219. The next prime is 121413031261. The reversal of 121413031243 is 342130314121.

It is not a de Polignac number, because 121413031243 - 2⁵ = 121413031211 is a prime.

It is a super-2 number, since 2×121413031243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121413031643) 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, 1059478 + ... + 1168468.

It is an arithmetic number, because the mean of its divisors is an integer number (8722411776).

Almost surely, 2^121413031243 is an apocalyptic number.

121413031243 is a deficient number, since it is larger than the sum of its proper divisors (18145557173).

121413031243 is a wasteful number, since it uses less digits than its factorization.

121413031243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109914.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121413031243 its reverse (342130314121), we get a palindrome (463543345364).

The spelling of 121413031243 in words is "one hundred twenty-one billion, four hundred thirteen million, thirty-one thousand, two hundred forty-three".