121316407236 has 48 divisors (see below), whose sum is σ = 316014713280. Its totient is φ = 40247141760.

The previous prime is 121316407217. The next prime is 121316407237. The reversal of 121316407236 is 632704613121.

121316407236 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 1 + 640 + 7 + 2 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 121316407236.

It is not an unprimeable number, because it can be changed into a prime (121316407237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2639061 + ... + 2684636.

It is an arithmetic number, because the mean of its divisors is an integer number (6583639860).

Almost surely, 2^121316407236 is an apocalyptic number.

It is an amenable number.

121316407236 is an abundant number, since it is smaller than the sum of its proper divisors (194698306044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121316407236 is a wasteful number, since it uses less digits than its factorization.

121316407236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323921 (or 5323913 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 121316407236 in words is "one hundred twenty-one billion, three hundred sixteen million, four hundred seven thousand, two hundred thirty-six".