121540314351 has 16 divisors (see below), whose sum is σ = 166022438400. Its totient is φ = 79042918080.

The previous prime is 121540314341. The next prime is 121540314361. The reversal of 121540314351 is 153413045121.

It is an interprime number because it is at equal distance from previous prime (121540314341) and next prime (121540314361).

It is not a de Polignac number, because 121540314351 - 2⁵ = 121540314319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121540314341) 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 15 ways as a sum of consecutive naturals, for example, 1396746 + ... + 1481208.

It is an arithmetic number, because the mean of its divisors is an integer number (10376402400).

Almost surely, 2^121540314351 is an apocalyptic number.

121540314351 is a deficient number, since it is larger than the sum of its proper divisors (44482124049).

121540314351 is a wasteful number, since it uses less digits than its factorization.

121540314351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96206.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 121540314351 its reverse (153413045121), we get a palindrome (274953359472).

The spelling of 121540314351 in words is "one hundred twenty-one billion, five hundred forty million, three hundred fourteen thousand, three hundred fifty-one".