121131001365 has 64 divisors (see below), whose sum is σ = 214120488960. Its totient is φ = 57983420160.

The previous prime is 121131001351. The next prime is 121131001373. The reversal of 121131001365 is 563100131121.

It is not a de Polignac number, because 121131001365 - 2⁸ = 121131001109 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 37235079 + ... + 37238331.

It is an arithmetic number, because the mean of its divisors is an integer number (3345632640).

Almost surely, 2^121131001365 is an apocalyptic number.

121131001365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121131001365 is a deficient number, since it is larger than the sum of its proper divisors (92989487595).

121131001365 is a wasteful number, since it uses less digits than its factorization.

121131001365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074.

The product of its (nonzero) digits is 540, while the sum is 24.

Adding to 121131001365 its reverse (563100131121), we get a palindrome (684231132486).

The spelling of 121131001365 in words is "one hundred twenty-one billion, one hundred thirty-one million, one thousand, three hundred sixty-five".