121345404434 has 16 divisors (see below), whose sum is σ = 182737681560. Its totient is φ = 60433067520.

The previous prime is 121345404421. The next prime is 121345404437. The reversal of 121345404434 is 434404543121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120961362025 + 384042409 = 347795^2 + 19597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121345404394 and 121345404403.

It is not an unprimeable number, because it can be changed into a prime (121345404437) 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, 1052144 + ... + 1161764.

Almost surely, 2^121345404434 is an apocalyptic number.

121345404434 is a deficient number, since it is larger than the sum of its proper divisors (61392277126).

121345404434 is a wasteful number, since it uses less digits than its factorization.

121345404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111805.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 121345404434 its reverse (434404543121), we get a palindrome (555749947555).

The spelling of 121345404434 in words is "one hundred twenty-one billion, three hundred forty-five million, four hundred four thousand, four hundred thirty-four".