12210221001 has 32 divisors (see below), whose sum is σ = 18260545536. Its totient is φ = 7192152000.

The previous prime is 12210220993. The next prime is 12210221011. The reversal of 12210221001 is 10012201221.

It is not a de Polignac number, because 12210221001 - 2³ = 12210220993 is a prime.

It is a super-2 number, since 2×12210221001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12210221011) 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, 1204966 + ... + 1215056.

It is an arithmetic number, because the mean of its divisors is an integer number (570642048).

Almost surely, 2^12210221001 is an apocalyptic number.

12210221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210221001 is a deficient number, since it is larger than the sum of its proper divisors (6050324535).

12210221001 is a wasteful number, since it uses less digits than its factorization.

12210221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11133.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12210221001 its reverse (10012201221), we get a palindrome (22222422222).

The spelling of 12210221001 in words is "twelve billion, two hundred ten million, two hundred twenty-one thousand, one".