1000221000210 has 40 divisors (see below), whose sum is σ = 2689483136076. Its totient is φ = 266725599840.

The previous prime is 1000221000209. The next prime is 1000221000223. The reversal of 1000221000210 is 120001220001.

It can be written as a sum of positive squares in 2 ways, for example, as 853715017089 + 146505983121 = 923967^2 + 382761^2 .

It is a super-2 number, since 2×1000221000210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000221000192 and 1000221000201.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 617419561 + ... + 617421180.

Almost surely, 2^{1000221000210} is an apocalyptic number.

1000221000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000221000210 is an abundant number, since it is smaller than the sum of its proper divisors (1689262135866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000221000210 is a wasteful number, since it uses less digits than its factorization.

1000221000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234840760 (or 1234840751 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000221000210 its reverse (120001220001), we get a palindrome (1120222220211).

The spelling of 1000221000210 in words is "one trillion, two hundred twenty-one million, two hundred ten", and thus it is an aban number.