121431240513004 has 12 divisors (see below), whose sum is σ = 212504923348984. Its totient is φ = 60715548127584.

The previous prime is 121431240513001. The next prime is 121431240513031. The reversal of 121431240513004 is 400315042134121.

It is a happy number.

It is a super-3 number, since 3×121431240513004³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121431240513001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14151489 + ... + 21050584.

Almost surely, 2^{121431240513004} is an apocalyptic number.

It is an amenable number.

121431240513004 is a deficient number, since it is larger than the sum of its proper divisors (91073682835980).

121431240513004 is a wasteful number, since it uses less digits than its factorization.

121431240513004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36064464 (or 36064462 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 121431240513004 its reverse (400315042134121), we get a palindrome (521746282647125).

The spelling of 121431240513004 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, two hundred forty million, five hundred thirteen thousand, four".