121432440002 has 32 divisors (see below), whose sum is σ = 193654297152. Its totient is φ = 56910541824.

The previous prime is 121432439987. The next prime is 121432440029. The reversal of 121432440002 is 200044234121.

It is a self number, because there is not a number n which added to its sum of digits gives 121432440002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30952013 + ... + 30955935.

It is an arithmetic number, because the mean of its divisors is an integer number (6051696786).

Almost surely, 2^121432440002 is an apocalyptic number.

121432440002 is a deficient number, since it is larger than the sum of its proper divisors (72221857150).

121432440002 is a wasteful number, since it uses less digits than its factorization.

121432440002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 121432440002 its reverse (200044234121), we get a palindrome (321476674123).

The spelling of 121432440002 in words is "one hundred twenty-one billion, four hundred thirty-two million, four hundred forty thousand, two".