12212211001021 has 4 divisors (see below), whose sum is σ = 12225616282944. Its totient is φ = 12198805719100.

The previous prime is 12212211000973. The next prime is 12212211001027. The reversal of 12212211001021 is 12010011221221.

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 12212211001021 - 2²³ = 12212202612413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212211000986 and 12212211001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212211001027) 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, 6702639595 + ... + 6702641416.

It is an arithmetic number, because the mean of its divisors is an integer number (3056404070736).

Almost surely, 2^{12212211001021} is an apocalyptic number.

It is an amenable number.

12212211001021 is a deficient number, since it is larger than the sum of its proper divisors (13405281923).

12212211001021 is an equidigital number, since it uses as much as digits as its factorization.

12212211001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13405281922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12212211001021 its reverse (12010011221221), we get a palindrome (24222222222242).

The spelling of 12212211001021 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, one thousand, twenty-one".