121205504150120 has 32 divisors (see below), whose sum is σ = 293690260057320. Its totient is φ = 44752801532160.

The previous prime is 121205504150069. The next prime is 121205504150147. The reversal of 121205504150120 is 21051405502121.

It can be written as a sum of positive squares in 4 ways, for example, as 60739359254116 + 60466144896004 = 7793546^2 + 7775998^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116543753471 + ... + 116543754510.

Almost surely, 2^{121205504150120} is an apocalyptic number.

121205504150120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121205504150120 is an abundant number, since it is smaller than the sum of its proper divisors (172484755907200).

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

121205504150120 is a wasteful number, since it uses less digits than its factorization.

121205504150120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233087508005 (or 233087508001 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 121205504150120 its reverse (21051405502121), we get a palindrome (142256909652241).

The spelling of 121205504150120 in words is "one hundred twenty-one trillion, two hundred five billion, five hundred four million, one hundred fifty thousand, one hundred twenty".