22011211110001 has 4 divisors (see below), whose sum is σ = 22548069917604. Its totient is φ = 21474352302400.

The previous prime is 22011211109983. The next prime is 22011211110019. The reversal of 22011211110001 is 10001111211022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22011211109983) and next prime (22011211110019).

It can be written as a sum of positive squares in 2 ways, for example, as 11569685227776 + 10441525882225 = 3401424^2 + 3231335^2 .

It is a cyclic number.

It is not a de Polignac number, because 22011211110001 - 2⁷ = 22011211109873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011211110071) 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, 268429403740 + ... + 268429403821.

It is an arithmetic number, because the mean of its divisors is an integer number (5637017479401).

Almost surely, 2^{22011211110001} is an apocalyptic number.

It is an amenable number.

22011211110001 is a deficient number, since it is larger than the sum of its proper divisors (536858807603).

22011211110001 is an equidigital number, since it uses as much as digits as its factorization.

22011211110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536858807602.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 22011211110001 its reverse (10001111211022), we get a palindrome (32012322321023).

The spelling of 22011211110001 in words is "twenty-two trillion, eleven billion, two hundred eleven million, one hundred ten thousand, one".