121343256250 has 48 divisors (see below), whose sum is σ = 237395805696. Its totient is φ = 46426930000.

The previous prime is 121343256239. The next prime is 121343256341. The reversal of 121343256250 is 52652343121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278314 + ... + 565813.

It is an arithmetic number, because the mean of its divisors is an integer number (4945745952).

Almost surely, 2^121343256250 is an apocalyptic number.

121343256250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121343256250 is a deficient number, since it is larger than the sum of its proper divisors (116052549446).

121343256250 is an frugal number, since it uses more digits than its factorization.

121343256250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844177 (or 844157 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 121343256250 its reverse (52652343121), we get a palindrome (173995599371).

The spelling of 121343256250 in words is "one hundred twenty-one billion, three hundred forty-three million, two hundred fifty-six thousand, two hundred fifty".