121208475075 has 48 divisors (see below), whose sum is σ = 215433592320. Its totient is φ = 59939118720.

The previous prime is 121208475071. The next prime is 121208475119. The reversal of 121208475075 is 570574802121.

It is not a de Polignac number, because 121208475075 - 2² = 121208475071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121208475071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 837904 + ... + 971853.

It is an arithmetic number, because the mean of its divisors is an integer number (4488199840).

Almost surely, 2^121208475075 is an apocalyptic number.

121208475075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121208475075 is a deficient number, since it is larger than the sum of its proper divisors (94225117245).

121208475075 is a wasteful number, since it uses less digits than its factorization.

121208475075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809836 (or 1809831 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 121208475075 in words is "one hundred twenty-one billion, two hundred eight million, four hundred seventy-five thousand, seventy-five".