121313350340 has 144 divisors (see below), whose sum is σ = 323913102912. Its totient is φ = 37820369664.

The previous prime is 121313350331. The next prime is 121313350349. The reversal of 121313350340 is 43053313121.

It is an interprime number because it is at equal distance from previous prime (121313350331) and next prime (121313350349).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (121313350349) 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, 782519 + ... + 924641.

It is an arithmetic number, because the mean of its divisors is an integer number (2249396548).

Almost surely, 2^121313350340 is an apocalyptic number.

121313350340 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 121313350340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161956551456).

121313350340 is an abundant number, since it is smaller than the sum of its proper divisors (202599752572).

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

121313350340 is a wasteful number, since it uses less digits than its factorization.

121313350340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142226 (or 142217 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121313350340 its reverse (43053313121), we get a palindrome (164366663461).

The spelling of 121313350340 in words is "one hundred twenty-one billion, three hundred thirteen million, three hundred fifty thousand, three hundred forty".