121426365123 has 12 divisors (see below), whose sum is σ = 200449872688. Its totient is φ = 69386494320.

The previous prime is 121426365119. The next prime is 121426365127. The reversal of 121426365123 is 321563624121.

121426365123 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 2 + 636 + 5 + 12 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (121426365119) and next prime (121426365127).

It is not a de Polignac number, because 121426365123 - 2² = 121426365119 is a prime.

It is a super-2 number, since 2×121426365123² (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 (121426365127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963701248 + ... + 963701373.

Almost surely, 2^121426365123 is an apocalyptic number.

121426365123 is a deficient number, since it is larger than the sum of its proper divisors (79023507565).

121426365123 is a wasteful number, since it uses less digits than its factorization.

121426365123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927402634 (or 1927402631 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 121426365123 its reverse (321563624121), we get a palindrome (442989989244).

The spelling of 121426365123 in words is "one hundred twenty-one billion, four hundred twenty-six million, three hundred sixty-five thousand, one hundred twenty-three".