12202201000021 has 12 divisors (see below), whose sum is σ = 12963280236868. Its totient is φ = 11483467103232.

The previous prime is 12202201000013. The next prime is 12202201000027. The reversal of 12202201000021 is 12000010220221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1036244597521 + 11165956402500 = 1017961^2 + 3341550^2 .

It is not a de Polignac number, because 12202201000021 - 2³ = 12202201000013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202200999965 and 12202201000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202201000027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1724845 + ... + 5232541.

Almost surely, 2^{12202201000021} is an apocalyptic number.

It is an amenable number.

12202201000021 is a deficient number, since it is larger than the sum of its proper divisors (761079236847).

12202201000021 is a wasteful number, since it uses less digits than its factorization.

12202201000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519768 (or 3519751 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12202201000021 its reverse (12000010220221), we get a palindrome (24202211220242).

The spelling of 12202201000021 in words is "twelve trillion, two hundred two billion, two hundred one million, twenty-one", and thus it is an aban number.