22101021010001 has 4 divisors (see below), whose sum is σ = 22106261948772. Its totient is φ = 22095780071232.

The previous prime is 22101021009997. The next prime is 22101021010027. The reversal of 22101021010001 is 10001012010122.

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 21357892531600 + 743128478401 = 4621460^2 + 862049^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101021010001 - 2² = 22101021009997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22101021010501) 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, 2620463060 + ... + 2620471493.

It is an arithmetic number, because the mean of its divisors is an integer number (5526565487193).

Almost surely, 2^{22101021010001} is an apocalyptic number.

It is an amenable number.

22101021010001 is a deficient number, since it is larger than the sum of its proper divisors (5240938771).

22101021010001 is an equidigital number, since it uses as much as digits as its factorization.

22101021010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240938770.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22101021010001 its reverse (10001012010122), we get a palindrome (32102033020123).

The spelling of 22101021010001 in words is "twenty-two trillion, one hundred one billion, twenty-one million, ten thousand, one".