121474347855 has 64 divisors (see below), whose sum is σ = 232140072960. Its totient is φ = 53034702336.

The previous prime is 121474347823. The next prime is 121474347887. The reversal of 121474347855 is 558743474121.

It is an interprime number because it is at equal distance from previous prime (121474347823) and next prime (121474347887).

It is not a de Polignac number, because 121474347855 - 2⁵ = 121474347823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121474347798 and 121474347807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1538481 + ... + 1615509.

It is an arithmetic number, because the mean of its divisors is an integer number (3627188640).

Almost surely, 2^121474347855 is an apocalyptic number.

121474347855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121474347855 is a deficient number, since it is larger than the sum of its proper divisors (110665725105).

121474347855 is a wasteful number, since it uses less digits than its factorization.

121474347855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77720.

The product of its digits is 3763200, while the sum is 51.

The spelling of 121474347855 in words is "one hundred twenty-one billion, four hundred seventy-four million, three hundred forty-seven thousand, eight hundred fifty-five".