12021200010 has 64 divisors (see below), whose sum is σ = 33450312960. Its totient is φ = 3066275520.

The previous prime is 12021199991. The next prime is 12021200017. The reversal of 12021200010 is 1000212021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12021199965 and 12021200001.

It is not an unprimeable number, because it can be changed into a prime (12021200017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 961681 + ... + 974100.

It is an arithmetic number, because the mean of its divisors is an integer number (522661140).

Almost surely, 2^12021200010 is an apocalyptic number.

12021200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021200010 is an abundant number, since it is smaller than the sum of its proper divisors (21429112950).

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

12021200010 is a wasteful number, since it uses less digits than its factorization.

12021200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935820 (or 1935814 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12021200010 its reverse (1000212021), we get a palindrome (13021412031).

The spelling of 12021200010 in words is "twelve billion, twenty-one million, two hundred thousand, ten".