12200000011021 has 2 divisors, whose sum is σ = 12200000011022. Its totient is φ = 12200000011020.

The previous prime is 12200000011013. The next prime is 12200000011057. The reversal of 12200000011021 is 12011000000221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8705863324900 + 3494136686121 = 2950570^2 + 1869261^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200000011021 - 2³ = 12200000011013 is a prime.

It is a super-3 number, since 3×12200000011021³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12200000010989 and 12200000011007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12200000311021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100000005510 + 6100000005511.

It is an arithmetic number, because the mean of its divisors is an integer number (6100000005511).

Almost surely, 2^{12200000011021} is an apocalyptic number.

It is an amenable number.

12200000011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12200000011021 is an equidigital number, since it uses as much as digits as its factorization.

12200000011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12200000011021 its reverse (12011000000221), we get a palindrome (24211000011242).

The spelling of 12200000011021 in words is "twelve trillion, two hundred billion, eleven thousand, twenty-one".