12020023210 has 32 divisors (see below), whose sum is σ = 23379950160. Its totient is φ = 4423001088.

The previous prime is 12020023201. The next prime is 12020023243. The reversal of 12020023210 is 1232002021.

It can be written as a sum of positive squares in 8 ways, for example, as 4584237849 + 7435785361 = 67707^2 + 86231^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 119695 + ... + 195874.

Almost surely, 2^12020023210 is an apocalyptic number.

12020023210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020023210 is a deficient number, since it is larger than the sum of its proper divisors (11359926950).

12020023210 is a wasteful number, since it uses less digits than its factorization.

12020023210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315882.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12020023210 its reverse (1232002021), we get a palindrome (13252025231).

The spelling of 12020023210 in words is "twelve billion, twenty million, twenty-three thousand, two hundred ten".