121285245288 has 16 divisors (see below), whose sum is σ = 303213113280. Its totient is φ = 40428415088.

The previous prime is 121285245287. The next prime is 121285245329. The reversal of 121285245288 is 882542582121.

It is a super-2 number, since 2×121285245288² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121285245283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526775920 + ... + 2526775967.

It is an arithmetic number, because the mean of its divisors is an integer number (18950819580).

Almost surely, 2^121285245288 is an apocalyptic number.

It is an amenable number.

121285245288 is an abundant number, since it is smaller than the sum of its proper divisors (181927867992).

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

121285245288 is a wasteful number, since it uses less digits than its factorization.

121285245288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053551896 (or 5053551892 counting only the distinct ones).

The product of its digits is 819200, while the sum is 48.

The spelling of 121285245288 in words is "one hundred twenty-one billion, two hundred eighty-five million, two hundred forty-five thousand, two hundred eighty-eight".