22010101 has 4 divisors (see below), whose sum is σ = 22769100. Its totient is φ = 21251104.

The previous prime is 22010089. The next prime is 22010117. The reversal of 22010101 is 10101022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10101022 = 2 ⋅5050511.

It can be written as a sum of positive squares in 2 ways, for example, as 14447601 + 7562500 = 3801^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010101 - 2⁷ = 22009973 is a prime.

It is a Duffinian number.

22010101 is a modest number, since divided by 10101 gives 22 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010141) 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, 379456 + ... + 379513.

It is an arithmetic number, because the mean of its divisors is an integer number (5692275).

Almost surely, 2^22010101 is an apocalyptic number.

It is an amenable number.

22010101 is a deficient number, since it is larger than the sum of its proper divisors (758999).

22010101 is an equidigital number, since it uses as much as digits as its factorization.

22010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758998.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 22010101 is about 4691.4924064737. The cubic root of 22010101 is about 280.2468104423.

Adding to 22010101 its reverse (10101022), we get a palindrome (32111123).

The spelling of 22010101 in words is "twenty-two million, ten thousand, one hundred one".