20012120 has 32 divisors (see below), whose sum is σ = 45154800. Its totient is φ = 7982208.

The previous prime is 20012119. The next prime is 20012171. The reversal of 20012120 is 2121002.

It is a super-3 number, since 3×20012120³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 20012098 and 20012107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26711 + ... + 27449.

Almost surely, 2^20012120 is an apocalyptic number.

20012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012120 is an abundant number, since it is smaller than the sum of its proper divisors (25142680).

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

20012120 is a wasteful number, since it uses less digits than its factorization.

20012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 20012120 is about 4473.4908069650. The cubic root of 20012120 is about 271.4965818232.

Adding to 20012120 its reverse (2121002), we get a palindrome (22133122).

The spelling of 20012120 in words is "twenty million, twelve thousand, one hundred twenty".