121302530120 has 32 divisors (see below), whose sum is σ = 280307201400. Its totient is φ = 47209632768.

The previous prime is 121302530119. The next prime is 121302530137. The reversal of 121302530120 is 21035203121.

It can be written as a sum of positive squares in 4 ways, for example, as 104237288164 + 17065241956 = 322858^2 + 130634^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121302530092 and 121302530101.

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 7 ways as a sum of consecutive naturals, for example, 40979105 + ... + 40982064.

Almost surely, 2^121302530120 is an apocalyptic number.

121302530120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121302530120 is an abundant number, since it is smaller than the sum of its proper divisors (159004671280).

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

121302530120 is a wasteful number, since it uses less digits than its factorization.

121302530120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81961217 (or 81961213 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 121302530120 its reverse (21035203121), we get a palindrome (142337733241).

The spelling of 121302530120 in words is "one hundred twenty-one billion, three hundred two million, five hundred thirty thousand, one hundred twenty".