22010011210021 has 4 divisors (see below), whose sum is σ = 22311518212972. Its totient is φ = 21708504207072.

The previous prime is 22010011210009. The next prime is 22010011210037. The reversal of 22010011210021 is 12001211001022.

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 18315104548225 + 3694906661796 = 4279615^2 + 1922214^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010011210021 - 2¹⁷ = 22010011078949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22010011209983 and 22010011210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010011214021) 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, 150753501366 + ... + 150753501511.

It is an arithmetic number, because the mean of its divisors is an integer number (5577879553243).

Almost surely, 2^{22010011210021} is an apocalyptic number.

It is an amenable number.

22010011210021 is a deficient number, since it is larger than the sum of its proper divisors (301507002951).

22010011210021 is an equidigital number, since it uses as much as digits as its factorization.

22010011210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301507002950.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22010011210021 its reverse (12001211001022), we get a palindrome (34011222211043).

The spelling of 22010011210021 in words is "twenty-two trillion, ten billion, eleven million, two hundred ten thousand, twenty-one".