12000101221 has 4 divisors (see below), whose sum is σ = 12021416352. Its totient is φ = 11978786092.

The previous prime is 12000101189. The next prime is 12000101251. The reversal of 12000101221 is 12210100021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12000101221 - 2⁵ = 12000101189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000101198 and 12000101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000101251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10656721 + ... + 10657846.

It is an arithmetic number, because the mean of its divisors is an integer number (3005354088).

Almost surely, 2^12000101221 is an apocalyptic number.

It is an amenable number.

12000101221 is a deficient number, since it is larger than the sum of its proper divisors (21315131).

12000101221 is an equidigital number, since it uses as much as digits as its factorization.

12000101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21315130.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12000101221 its reverse (12210100021), we get a palindrome (24210201242).

The spelling of 12000101221 in words is "twelve billion, one hundred one thousand, two hundred twenty-one".