210022200211021 has 6 divisors (see below), whose sum is σ = 230850848165966. Its totient is φ = 190929272919000.

The previous prime is 210022200211001. The next prime is 210022200211067. The reversal of 210022200211021 is 120112002220012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 201323322434025 + 8698877776996 = 14188845^2 + 2949386^2 .

It is not a de Polignac number, because 210022200211021 - 2⁹ = 210022200210509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210022200210986 and 210022200211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022200211001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867860331330 + ... + 867860331571.

Almost surely, 2^{210022200211021} is an apocalyptic number.

It is an amenable number.

210022200211021 is a deficient number, since it is larger than the sum of its proper divisors (20828647954945).

210022200211021 is a wasteful number, since it uses less digits than its factorization.

210022200211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735720662923 (or 1735720662912 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210022200211021 its reverse (120112002220012), we get a palindrome (330134202431033).

The spelling of 210022200211021 in words is "two hundred ten trillion, twenty-two billion, two hundred million, two hundred eleven thousand, twenty-one".