100213851 has 4 divisors (see below), whose sum is σ = 133618472. Its totient is φ = 66809232.

The previous prime is 100213849. The next prime is 100213859. The reversal of 100213851 is 158312001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158312001 = 3 ⋅52770667.

It is not a de Polignac number, because 100213851 - 2¹ = 100213849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100213859) 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, 16702306 + ... + 16702311.

It is an arithmetic number, because the mean of its divisors is an integer number (33404618).

Almost surely, 2^100213851 is an apocalyptic number.

100213851 is a deficient number, since it is larger than the sum of its proper divisors (33404621).

100213851 is an equidigital number, since it uses as much as digits as its factorization.

100213851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33404620.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 100213851 is about 10010.6868395730. The cubic root of 100213851 is about 464.4895172564.

Adding to 100213851 its reverse (158312001), we get a palindrome (258525852).

The spelling of 100213851 in words is "one hundred million, two hundred thirteen thousand, eight hundred fifty-one".