121350313240 has 256 divisors, whose sum is σ = 323026704000. Its totient is φ = 40596111360.

The previous prime is 121350313237. The next prime is 121350313247. The reversal of 121350313240 is 42313053121.

It is a happy number.

It is a super-2 number, since 2×121350313240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121350313247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146381146 + ... + 146381974.

Almost surely, 2^121350313240 is an apocalyptic number.

121350313240 is a gapful number since it is divisible by the number (10) 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 121350313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161513352000).

121350313240 is an abundant number, since it is smaller than the sum of its proper divisors (201676390760).

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

121350313240 is a wasteful number, since it uses less digits than its factorization.

121350313240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 121350313240 its reverse (42313053121), we get a palindrome (163663366361).

The spelling of 121350313240 in words is "one hundred twenty-one billion, three hundred fifty million, three hundred thirteen thousand, two hundred forty".