121541414213450 has 384 divisors, whose sum is σ = 304854759475200. Its totient is φ = 34901767296000.

The previous prime is 121541414213423. The next prime is 121541414213497. The reversal of 121541414213450 is 54312414145121.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6011237441 + ... + 6011257659.

It is an arithmetic number, because the mean of its divisors is an integer number (793892602800).

Almost surely, 2^{121541414213450} is an apocalyptic number.

121541414213450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121541414213450 is an abundant number, since it is smaller than the sum of its proper divisors (183313345261750).

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

121541414213450 is a wasteful number, since it uses less digits than its factorization.

121541414213450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22526 (or 22521 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

Adding to 121541414213450 its reverse (54312414145121), we get a palindrome (175853828358571).

The spelling of 121541414213450 in words is "one hundred twenty-one trillion, five hundred forty-one billion, four hundred fourteen million, two hundred thirteen thousand, four hundred fifty".