12211313021 has 8 divisors (see below), whose sum is σ = 12321769344. Its totient is φ = 12100898880.

The previous prime is 12211313003. The next prime is 12211313033. The reversal of 12211313021 is 12031311221.

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

It is a cyclic number.

It is not a de Polignac number, because 12211313021 - 2⁶ = 12211312957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211313041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021340 + ... + 1033226.

It is an arithmetic number, because the mean of its divisors is an integer number (1540221168).

Almost surely, 2^12211313021 is an apocalyptic number.

It is an amenable number.

12211313021 is a deficient number, since it is larger than the sum of its proper divisors (110456323).

12211313021 is a wasteful number, since it uses less digits than its factorization.

12211313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21091.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12211313021 its reverse (12031311221), we get a palindrome (24242624242).

The spelling of 12211313021 in words is "twelve billion, two hundred eleven million, three hundred thirteen thousand, twenty-one".