200110221100021 has 8 divisors (see below), whose sum is σ = 203992464887640. Its totient is φ = 196231924691712.

The previous prime is 200110221100003. The next prime is 200110221100033. The reversal of 200110221100021 is 120001122011002.

It can be written as a sum of positive squares in 4 ways, for example, as 110476096799121 + 89634124300900 = 10510761^2 + 9467530^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200110221100021 - 2²⁵ = 200110187545589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200110221099974 and 200110221100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200110221100091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986742456 + ... + 986945233.

It is an arithmetic number, because the mean of its divisors is an integer number (25499058110955).

Almost surely, 2^{200110221100021} is an apocalyptic number.

It is an amenable number.

200110221100021 is a deficient number, since it is larger than the sum of its proper divisors (3882243787619).

200110221100021 is a wasteful number, since it uses less digits than its factorization.

200110221100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973689655.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200110221100021 its reverse (120001122011002), we get a palindrome (320111343111023).

The spelling of 200110221100021 in words is "two hundred trillion, one hundred ten billion, two hundred twenty-one million, one hundred thousand, twenty-one".