12211011021 has 8 divisors (see below), whose sum is σ = 17761470624. Its totient is φ = 7400612720.

The previous prime is 12211010993. The next prime is 12211011053. The reversal of 12211011021 is 12011011221.

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 12211011021 - 2⁷ = 12211010893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12211010988 and 12211011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211011061) 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, 185015286 + ... + 185015351.

It is an arithmetic number, because the mean of its divisors is an integer number (2220183828).

Almost surely, 2^12211011021 is an apocalyptic number.

12211011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12211011021 is a deficient number, since it is larger than the sum of its proper divisors (5550459603).

12211011021 is a wasteful number, since it uses less digits than its factorization.

12211011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370030651.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211011021 its reverse (12011011221), we get a palindrome (24222022242).

The spelling of 12211011021 in words is "twelve billion, two hundred eleven million, eleven thousand, twenty-one".