100001221000210 has 32 divisors (see below), whose sum is σ = 183675922402032. Its totient is φ = 39186388750080.

The previous prime is 100001221000199. The next prime is 100001221000279. The reversal of 100001221000210 is 12000122100001.

It can be written as a sum of positive squares in 8 ways, for example, as 74307382549929 + 25693838450281 = 8620173^2 + 5068909^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142373989 + ... + 143074648.

Almost surely, 2^{100001221000210} is an apocalyptic number.

100001221000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100001221000210 is a deficient number, since it is larger than the sum of its proper divisors (83674701401822).

100001221000210 is a wasteful number, since it uses less digits than its factorization.

100001221000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285449358.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100001221000210 its reverse (12000122100001), we get a palindrome (112001343100211).

The spelling of 100001221000210 in words is "one hundred trillion, one billion, two hundred twenty-one million, two hundred ten", and thus it is an aban number.