12202001000021 has 4 divisors (see below), whose sum is σ = 13945144000032. Its totient is φ = 10458858000012.

The previous prime is 12202000999987. The next prime is 12202001000047. The reversal of 12202001000021 is 12000010020221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12202001000021 - 2³⁴ = 12184821130837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12202000999966 and 12202001000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202001000921) 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, 871571499995 + ... + 871571500008.

It is an arithmetic number, because the mean of its divisors is an integer number (3486286000008).

Almost surely, 2^{12202001000021} is an apocalyptic number.

It is an amenable number.

12202001000021 is a deficient number, since it is larger than the sum of its proper divisors (1743143000011).

12202001000021 is an equidigital number, since it uses as much as digits as its factorization.

12202001000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743143000010.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12202001000021 its reverse (12000010020221), we get a palindrome (24202011020242).

The spelling of 12202001000021 in words is "twelve trillion, two hundred two billion, one million, twenty-one", and thus it is an aban number.