101010200010221 has 4 divisors (see below), whose sum is σ = 101011105385244. Its totient is φ = 101009294635200.

The previous prime is 101010200010173. The next prime is 101010200010257. The reversal of 101010200010221 is 122010002010101.

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 96295243764196 + 4714956246025 = 9813014^2 + 2171395^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010200010221 - 2⁶ = 101010200010157 is a prime.

It is a super-2 number, since 2×101010200010221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010200010721) 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, 452520140 + ... + 452743301.

It is an arithmetic number, because the mean of its divisors is an integer number (25252776346311).

Almost surely, 2^{101010200010221} is an apocalyptic number.

It is an amenable number.

101010200010221 is a deficient number, since it is larger than the sum of its proper divisors (905375023).

101010200010221 is an equidigital number, since it uses as much as digits as its factorization.

101010200010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905375022.

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

Adding to 101010200010221 its reverse (122010002010101), we get a palindrome (223020202020322).

The spelling of 101010200010221 in words is "one hundred one trillion, ten billion, two hundred million, ten thousand, two hundred twenty-one".