200211101021 has 4 divisors (see below), whose sum is σ = 200269153500. Its totient is φ = 200153048544.

The previous prime is 200211100961. The next prime is 200211101033. The reversal of 200211101021 is 120101112002.

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 80502712900 + 119708388121 = 283730^2 + 345989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200211101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200211100993 and 200211101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211101221) 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, 29021066 + ... + 29027963.

It is an arithmetic number, because the mean of its divisors is an integer number (50067288375).

Almost surely, 2^200211101021 is an apocalyptic number.

It is an amenable number.

200211101021 is a deficient number, since it is larger than the sum of its proper divisors (58052479).

200211101021 is an equidigital number, since it uses as much as digits as its factorization.

200211101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58052478.

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

Adding to 200211101021 its reverse (120101112002), we get a palindrome (320312213023).

The spelling of 200211101021 in words is "two hundred billion, two hundred eleven million, one hundred one thousand, twenty-one".