12211012102021 has 4 divisors (see below), whose sum is σ = 12331913212044. Its totient is φ = 12090110992000.

The previous prime is 12211012102013. The next prime is 12211012102039. The reversal of 12211012102021 is 12020121011221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6381757173796 + 5829254928225 = 2526214^2 + 2414385^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211012102021 - 2³ = 12211012102013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211012101986 and 12211012102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211012112021) 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, 60450554860 + ... + 60450555061.

It is an arithmetic number, because the mean of its divisors is an integer number (3082978303011).

Almost surely, 2^{12211012102021} is an apocalyptic number.

It is an amenable number.

12211012102021 is a deficient number, since it is larger than the sum of its proper divisors (120901110023).

12211012102021 is a wasteful number, since it uses less digits than its factorization.

12211012102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120901110022.

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

Adding to 12211012102021 its reverse (12020121011221), we get a palindrome (24231133113242).

The spelling of 12211012102021 in words is "twelve trillion, two hundred eleven billion, twelve million, one hundred two thousand, twenty-one".