121013405320431 has 32 divisors (see below), whose sum is σ = 174431839357440. Its totient is φ = 74183146360704.

The previous prime is 121013405320427. The next prime is 121013405320481. The reversal of 121013405320431 is 134023504310121.

It is not a de Polignac number, because 121013405320431 - 2² = 121013405320427 is a prime.

It is a super-2 number, since 2×121013405320431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013405320481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79046856 + ... + 80563218.

It is an arithmetic number, because the mean of its divisors is an integer number (5450994979920).

Almost surely, 2^{121013405320431} is an apocalyptic number.

121013405320431 is a deficient number, since it is larger than the sum of its proper divisors (53418434037009).

121013405320431 is a wasteful number, since it uses less digits than its factorization.

121013405320431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524255.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 121013405320431 its reverse (134023504310121), we get a palindrome (255036909630552).

The spelling of 121013405320431 in words is "one hundred twenty-one trillion, thirteen billion, four hundred five million, three hundred twenty thousand, four hundred thirty-one".