12020211970 has 16 divisors (see below), whose sum is σ = 23300718840. Its totient is φ = 4438232064.

The previous prime is 12020211949. The next prime is 12020211971. The reversal of 12020211970 is 7911202021.

It can be written as a sum of positive squares in 4 ways, for example, as 5550101001 + 6470110969 = 74499^2 + 80437^2 .

It is not an unprimeable number, because it can be changed into a prime (12020211971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46231455 + ... + 46231714.

Almost surely, 2^12020211970 is an apocalyptic number.

12020211970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020211970 is a deficient number, since it is larger than the sum of its proper divisors (11280506870).

12020211970 is a wasteful number, since it uses less digits than its factorization.

12020211970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92463189.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 12020211970 its reverse (7911202021), we get a palindrome (19931413991).

The spelling of 12020211970 in words is "twelve billion, twenty million, two hundred eleven thousand, nine hundred seventy".