12202011001021 has 2 divisors, whose sum is σ = 12202011001022. Its totient is φ = 12202011001020.

The previous prime is 12202011001003. The next prime is 12202011001031. The reversal of 12202011001021 is 12010011020221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12201293511225 + 717489796 = 3493035^2 + 26786^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202011001021 - 2²¹ = 12202008903869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12202011000992 and 12202011001010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12202011001031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101005500510 + 6101005500511.

It is an arithmetic number, because the mean of its divisors is an integer number (6101005500511).

Almost surely, 2^{12202011001021} is an apocalyptic number.

It is an amenable number.

12202011001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12202011001021 is an equidigital number, since it uses as much as digits as its factorization.

12202011001021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12202011001021 its reverse (12010011020221), we get a palindrome (24212022021242).

It can be divided in two parts, 1220201 and 1001021, that added together give a palindrome (2221222).

The spelling of 12202011001021 in words is "twelve trillion, two hundred two billion, eleven million, one thousand, twenty-one".