12020020210 has 48 divisors (see below), whose sum is σ = 23870813400. Its totient is φ = 4354549760.

The previous prime is 12020020183. The next prime is 12020020211. The reversal of 12020020210 is 1202002021.

It can be written as a sum of positive squares in 4 ways, for example, as 8098380081 + 3921640129 = 89991^2 + 62623^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12020020211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307026 + ... + 343954.

Almost surely, 2^12020020210 is an apocalyptic number.

12020020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020020210 is a deficient number, since it is larger than the sum of its proper divisors (11850793190).

12020020210 is a wasteful number, since it uses less digits than its factorization.

12020020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37227 (or 37216 counting only the distinct ones).

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

12020020210 divided by its sum of digits (10) gives a palindrome (1202002021).

Adding to 12020020210 its reverse (1202002021), we get a palindrome (13222022231).

The spelling of 12020020210 in words is "twelve billion, twenty million, twenty thousand, two hundred ten".