22201012021021 has 4 divisors (see below), whose sum is σ = 22201056704032. Its totient is φ = 22200967338012.

The previous prime is 22201012020989. The next prime is 22201012021087. The reversal of 22201012021021 is 12012021010222.

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 22201012021021 - 2⁵ = 22201012020989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201012020986 and 22201012021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201012025021) 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, 21587745 + ... + 22592758.

It is an arithmetic number, because the mean of its divisors is an integer number (5550264176008).

Almost surely, 2^{22201012021021} is an apocalyptic number.

It is an amenable number.

22201012021021 is a deficient number, since it is larger than the sum of its proper divisors (44683011).

22201012021021 is an equidigital number, since it uses as much as digits as its factorization.

22201012021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44683010.

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

Adding to 22201012021021 its reverse (12012021010222), we get a palindrome (34213033031243).

The spelling of 22201012021021 in words is "twenty-two trillion, two hundred one billion, twelve million, twenty-one thousand, twenty-one".