121415300250 has 64 divisors (see below), whose sum is σ = 303100237440. Its totient is φ = 32372323200.

The previous prime is 121415300159. The next prime is 121415300257. The reversal of 121415300250 is 52003514121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121415300250.

It is not an unprimeable number, because it can be changed into a prime (121415300257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9348261 + ... + 9361239.

It is an arithmetic number, because the mean of its divisors is an integer number (4735941210).

Almost surely, 2^121415300250 is an apocalyptic number.

121415300250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121415300250 is an abundant number, since it is smaller than the sum of its proper divisors (181684937190).

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

121415300250 is a wasteful number, since it uses less digits than its factorization.

121415300250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25472 (or 25462 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 121415300250 its reverse (52003514121), we get a palindrome (173418814371).

The spelling of 121415300250 in words is "one hundred twenty-one billion, four hundred fifteen million, three hundred thousand, two hundred fifty".