121340411455 has 16 divisors (see below), whose sum is σ = 153335646720. Its totient is φ = 91925130528.

The previous prime is 121340411447. The next prime is 121340411461. The reversal of 121340411455 is 554114043121.

It is a cyclic number.

It is not a de Polignac number, because 121340411455 - 2³ = 121340411447 is a prime.

It is a congruent number.

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, 33387 + ... + 493756.

It is an arithmetic number, because the mean of its divisors is an integer number (9583477920).

Almost surely, 2^121340411455 is an apocalyptic number.

121340411455 is a deficient number, since it is larger than the sum of its proper divisors (31995235265).

121340411455 is a wasteful number, since it uses less digits than its factorization.

121340411455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529590.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 121340411455 its reverse (554114043121), we get a palindrome (675454454576).

The spelling of 121340411455 in words is "one hundred twenty-one billion, three hundred forty million, four hundred eleven thousand, four hundred fifty-five".