12020002120 has 64 divisors (see below), whose sum is σ = 30918931200. Its totient is φ = 4119763200.

The previous prime is 12020002117. The next prime is 12020002153. The reversal of 12020002120 is 2120002021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12020002097 and 12020002106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179045 + ... + 1189195.

It is an arithmetic number, because the mean of its divisors is an integer number (483108300).

Almost surely, 2^12020002120 is an apocalyptic number.

12020002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020002120 is an abundant number, since it is smaller than the sum of its proper divisors (18898929080).

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

12020002120 is a wasteful number, since it uses less digits than its factorization.

12020002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398 (or 14394 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12020002120 its reverse (2120002021), we get a palindrome (14140004141).

Subtracting from 12020002120 its reverse (2120002021), we obtain a palindrome (9900000099).

The spelling of 12020002120 in words is "twelve billion, twenty million, two thousand, one hundred twenty".