121221414421250 has 120 divisors (see below), whose sum is σ = 268963026952620. Its totient is φ = 40689704880000.

The previous prime is 121221414421249. The next prime is 121221414421277. The reversal of 121221414421250 is 52124414122121.

It can be written as a sum of positive squares in 10 ways, for example, as 14921169760849 + 106300244660401 = 3862793^2 + 10310201^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 28859285 + ... + 32791784.

Almost surely, 2^{121221414421250} is an apocalyptic number.

121221414421250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221414421250 is an abundant number, since it is smaller than the sum of its proper divisors (147741612531370).

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

121221414421250 is a wasteful number, since it uses less digits than its factorization.

121221414421250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61651126 (or 61651100 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

Adding to 121221414421250 its reverse (52124414122121), we get a palindrome (173345828543371).

The spelling of 121221414421250 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, four hundred fourteen million, four hundred twenty-one thousand, two hundred fifty".