121006378475 has 12 divisors (see below), whose sum is σ = 153537396936. Its totient is φ = 94553820480.

The previous prime is 121006378463. The next prime is 121006378483. The reversal of 121006378475 is 574873600121.

It is not a de Polignac number, because 121006378475 - 2²⁰ = 121005329899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56280962 + ... + 56283111.

It is an arithmetic number, because the mean of its divisors is an integer number (12794783078).

Almost surely, 2^121006378475 is an apocalyptic number.

121006378475 is a deficient number, since it is larger than the sum of its proper divisors (32531018461).

121006378475 is a wasteful number, since it uses less digits than its factorization.

121006378475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112564126 (or 112564121 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

Adding to 121006378475 its reverse (574873600121), we get a palindrome (695879978596).

The spelling of 121006378475 in words is "one hundred twenty-one billion, six million, three hundred seventy-eight thousand, four hundred seventy-five".