12200222101021 has 4 divisors (see below), whose sum is σ = 12201053816700. Its totient is φ = 12199390385344.

The previous prime is 12200222101007. The next prime is 12200222101037. The reversal of 12200222101021 is 12010122200221.

It is a happy number.

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 3998356168921 + 8201865932100 = 1999589^2 + 2863890^2 .

It is a cyclic number.

It is not a de Polignac number, because 12200222101021 - 2⁷ = 12200222100893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200222100986 and 12200222101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200222201021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415835836 + ... + 415865173.

It is an arithmetic number, because the mean of its divisors is an integer number (3050263454175).

Almost surely, 2^{12200222101021} is an apocalyptic number.

It is an amenable number.

12200222101021 is a deficient number, since it is larger than the sum of its proper divisors (831715679).

12200222101021 is an equidigital number, since it uses as much as digits as its factorization.

12200222101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831715678.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12200222101021 its reverse (12010122200221), we get a palindrome (24210344301242).

The spelling of 12200222101021 in words is "twelve trillion, two hundred billion, two hundred twenty-two million, one hundred one thousand, twenty-one".