12211032021 has 4 divisors (see below), whose sum is σ = 16281376032. Its totient is φ = 8140688012.

The previous prime is 12211032011. The next prime is 12211032037. The reversal of 12211032021 is 12023011221.

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 12211032021 - 2⁶ = 12211031957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211032011) 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, 2035172001 + ... + 2035172006.

It is an arithmetic number, because the mean of its divisors is an integer number (4070344008).

Almost surely, 2^12211032021 is an apocalyptic number.

It is an amenable number.

12211032021 is a deficient number, since it is larger than the sum of its proper divisors (4070344011).

12211032021 is an equidigital number, since it uses as much as digits as its factorization.

12211032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070344010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12211032021 its reverse (12023011221), we get a palindrome (24234043242).

The spelling of 12211032021 in words is "twelve billion, two hundred eleven million, thirty-two thousand, twenty-one".