12200021001 has 12 divisors (see below), whose sum is σ = 20139717312. Its totient is φ = 6971440536.

The previous prime is 12200020999. The next prime is 12200021027. The reversal of 12200021001 is 10012000221.

It is not a de Polignac number, because 12200021001 - 2¹ = 12200020999 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12200021051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96825501 + ... + 96825626.

It is an arithmetic number, because the mean of its divisors is an integer number (1678309776).

Almost surely, 2^12200021001 is an apocalyptic number.

It is an amenable number.

12200021001 is a deficient number, since it is larger than the sum of its proper divisors (7939696311).

12200021001 is a wasteful number, since it uses less digits than its factorization.

12200021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193651140 (or 193651137 counting only the distinct ones).

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

Adding to 12200021001 its reverse (10012000221), we get a palindrome (22212021222).

The spelling of 12200021001 in words is "twelve billion, two hundred million, twenty-one thousand, one".