22200101201021 has 4 divisors (see below), whose sum is σ = 22200486349500. Its totient is φ = 22199716052544.

The previous prime is 22200101201011. The next prime is 22200101201039. The reversal of 22200101201021 is 12010210100222.

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 15949951200121 + 6250150000900 = 3993739^2 + 2500030^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200101201021 - 2¹⁴ = 22200101184637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200101200987 and 22200101201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200101201011) 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, 192487766 + ... + 192603063.

It is an arithmetic number, because the mean of its divisors is an integer number (5550121587375).

Almost surely, 2^{22200101201021} is an apocalyptic number.

It is an amenable number.

22200101201021 is a deficient number, since it is larger than the sum of its proper divisors (385148479).

22200101201021 is an equidigital number, since it uses as much as digits as its factorization.

22200101201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385148478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22200101201021 its reverse (12010210100222), we get a palindrome (34210311301243).

The spelling of 22200101201021 in words is "twenty-two trillion, two hundred billion, one hundred one million, two hundred one thousand, twenty-one".