1000221210101 has 4 divisors (see below), whose sum is σ = 1000514275692. Its totient is φ = 999928144512.

The previous prime is 1000221210091. The next prime is 1000221210113. The reversal of 1000221210101 is 1010121220001.

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 463849534225 + 536371675876 = 681065^2 + 732374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000221210101 - 2¹⁴ = 1000221193717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221210701) 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, 146527676 + ... + 146534501.

It is an arithmetic number, because the mean of its divisors is an integer number (250128568923).

Almost surely, 2^{1000221210101} is an apocalyptic number.

It is an amenable number.

1000221210101 is a deficient number, since it is larger than the sum of its proper divisors (293065591).

1000221210101 is an equidigital number, since it uses as much as digits as its factorization.

1000221210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293065590.

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

Adding to 1000221210101 its reverse (1010121220001), we get a palindrome (2010342430102).

The spelling of 1000221210101 in words is "one trillion, two hundred twenty-one million, two hundred ten thousand, one hundred one".