100211213 has 4 divisors (see below), whose sum is σ = 100319100. Its totient is φ = 100103328.

The previous prime is 100211183. The next prime is 100211231. The reversal of 100211213 is 312112001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312112001 = 23 ⋅13570087.

It can be written as a sum of positive squares in 2 ways, for example, as 25786084 + 74425129 = 5078^2 + 8627^2 .

It is a cyclic number.

It is not a de Polignac number, because 100211213 - 2¹² = 100207117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100211194 and 100211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211233) 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, 52538 + ... + 54411.

It is an arithmetic number, because the mean of its divisors is an integer number (25079775).

Almost surely, 2^100211213 is an apocalyptic number.

It is an amenable number.

100211213 is a deficient number, since it is larger than the sum of its proper divisors (107887).

100211213 is an equidigital number, since it uses as much as digits as its factorization.

100211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107886.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 100211213 is about 10010.5550795148. Note that the first 3 decimals coincide. The cubic root of 100211213 is about 464.4854415254.

Adding to 100211213 its reverse (312112001), we get a palindrome (412323214).

The spelling of 100211213 in words is "one hundred million, two hundred eleven thousand, two hundred thirteen".