100212131 has 8 divisors (see below), whose sum is σ = 103498560. Its totient is φ = 96973888.

The previous prime is 100212121. The next prime is 100212143. The reversal of 100212131 is 131212001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100212131 - 2⁶ = 100212067 is a prime.

It is a super-2 number, since 2×100212131² = 20084942399122322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7796 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (12937320).

Almost surely, 2^100212131 is an apocalyptic number.

100212131 is a deficient number, since it is larger than the sum of its proper divisors (3286429).

100212131 is an equidigital number, since it uses as much as digits as its factorization.

100212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24093.

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

The square root of 100212131 is about 10010.6009310131. The cubic root of 100212131 is about 464.4868598508.

Adding to 100212131 its reverse (131212001), we get a palindrome (231424132).

The spelling of 100212131 in words is "one hundred million, two hundred twelve thousand, one hundred thirty-one".