12202112102021 has 4 divisors (see below), whose sum is σ = 12254481682092. Its totient is φ = 12149742521952.

The previous prime is 12202112102017. The next prime is 12202112102029. The reversal of 12202112102021 is 12020121120221.

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 6089597579521 + 6112514522500 = 2467711^2 + 2472350^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202112102021 - 2² = 12202112102017 is a prime.

It is a super-2 number, since 2×12202112102021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202112102029) 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, 26184789686 + ... + 26184790151.

It is an arithmetic number, because the mean of its divisors is an integer number (3063620420523).

Almost surely, 2^{12202112102021} is an apocalyptic number.

It is an amenable number.

12202112102021 is a deficient number, since it is larger than the sum of its proper divisors (52369580071).

12202112102021 is an equidigital number, since it uses as much as digits as its factorization.

12202112102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52369580070.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12202112102021 its reverse (12020121120221), we get a palindrome (24222233222242).

The spelling of 12202112102021 in words is "twelve trillion, two hundred two billion, one hundred twelve million, one hundred two thousand, twenty-one".