20121152120 has 32 divisors (see below), whose sum is σ = 45280263600. Its totient is φ = 8047097088.

The previous prime is 20121152089. The next prime is 20121152137. The reversal of 20121152120 is 2125112102.

It is a congruent number.

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, 215732 + ... + 294588.

Almost surely, 2^20121152120 is an apocalyptic number.

20121152120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121152120 is an abundant number, since it is smaller than the sum of its proper divisors (25159111480).

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

20121152120 is a wasteful number, since it uses less digits than its factorization.

20121152120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85247 (or 85243 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 20121152120 its reverse (2125112102), we get a palindrome (22246264222).

The spelling of 20121152120 in words is "twenty billion, one hundred twenty-one million, one hundred fifty-two thousand, one hundred twenty".