121431016126 has 16 divisors (see below), whose sum is σ = 208187191296. Its totient is φ = 52036930296.

The previous prime is 121431016123. The next prime is 121431016163. The reversal of 121431016126 is 621610134121.

It is a super-4 number, since 4×121431016126⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121431016094 and 121431016103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121431016123) 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 7 ways as a sum of consecutive naturals, for example, 256186 + ... + 555421.

It is an arithmetic number, because the mean of its divisors is an integer number (13011699456).

Almost surely, 2^121431016126 is an apocalyptic number.

121431016126 is a deficient number, since it is larger than the sum of its proper divisors (86756175170).

121431016126 is a wasteful number, since it uses less digits than its factorization.

121431016126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822303.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 121431016126 in words is "one hundred twenty-one billion, four hundred thirty-one million, sixteen thousand, one hundred twenty-six".