12212021001 has 8 divisors (see below), whose sum is σ = 16284948064. Its totient is φ = 8140220640.

The previous prime is 12212020981. The next prime is 12212021071. The reversal of 12212021001 is 10012021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12212021001 - 2¹³ = 12212012809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12212021071) 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, 256051 + ... + 299976.

It is an arithmetic number, because the mean of its divisors is an integer number (2035618508).

Almost surely, 2^12212021001 is an apocalyptic number.

It is an amenable number.

12212021001 is a deficient number, since it is larger than the sum of its proper divisors (4072927063).

12212021001 is an equidigital number, since it uses as much as digits as its factorization.

12212021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563351.

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

Adding to 12212021001 its reverse (10012021221), we get a palindrome (22224042222).

The spelling of 12212021001 in words is "twelve billion, two hundred twelve million, twenty-one thousand, one".