121249465848 has 192 divisors, whose sum is σ = 377219082240. Its totient is φ = 34465761792.

The previous prime is 121249465747. The next prime is 121249465849. The reversal of 121249465848 is 848564942121.

121249465848 is a `hidden beast` number, since 1 + 2 + 12 + 4 + 9 + 46 + 584 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 121249465794 and 121249465803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121249465849) 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, 117375540 + ... + 117376572.

It is an arithmetic number, because the mean of its divisors is an integer number (1964682720).

Almost surely, 2^121249465848 is an apocalyptic number.

121249465848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121249465848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188609541120).

121249465848 is an abundant number, since it is smaller than the sum of its proper divisors (255969616392).

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

121249465848 is a wasteful number, since it uses less digits than its factorization.

121249465848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018 (or 2011 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 121249465848 in words is "one hundred twenty-one billion, two hundred forty-nine million, four hundred sixty-five thousand, eight hundred forty-eight".