121342410455 has 16 divisors (see below), whose sum is σ = 171780593664. Its totient is φ = 80522151840.

The previous prime is 121342410443. The next prime is 121342410461. The reversal of 121342410455 is 554014243121.

It is not a de Polignac number, because 121342410455 - 2⁶ = 121342410391 is a prime.

It is a Duffinian number.

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, 55917077 + ... + 55919246.

It is an arithmetic number, because the mean of its divisors is an integer number (10736287104).

Almost surely, 2^121342410455 is an apocalyptic number.

121342410455 is a deficient number, since it is larger than the sum of its proper divisors (50438183209).

121342410455 is a wasteful number, since it uses less digits than its factorization.

121342410455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111836366.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 121342410455 its reverse (554014243121), we get a palindrome (675356653576).

The spelling of 121342410455 in words is "one hundred twenty-one billion, three hundred forty-two million, four hundred ten thousand, four hundred fifty-five".