121308712 has 24 divisors (see below), whose sum is σ = 264590010. Its totient is φ = 51989280.

The previous prime is 121308697. The next prime is 121308713. The reversal of 121308712 is 217803121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 95765796 + 25542916 = 9786^2 + 5054^2 .

It is not an unprimeable number, because it can be changed into a prime (121308713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154339 + ... + 155122.

Almost surely, 2^121308712 is an apocalyptic number.

It is an amenable number.

121308712 is an abundant number, since it is smaller than the sum of its proper divisors (143281298).

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

121308712 is a wasteful number, since it uses less digits than its factorization.

121308712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309481 (or 309470 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 121308712 is about 11014.0234247072. The cubic root of 121308712 is about 495.0290252681.

The spelling of 121308712 in words is "one hundred twenty-one million, three hundred eight thousand, seven hundred twelve".