212102100331 has 4 divisors (see below), whose sum is σ = 231384109464. Its totient is φ = 192820091200.

The previous prime is 212102100307. The next prime is 212102100359. The reversal of 212102100331 is 133001201212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212102100331 - 2⁵ = 212102100299 is a prime.

It is a super-2 number, since 2×212102100331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102101331) 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, 9641004550 + ... + 9641004571.

It is an arithmetic number, because the mean of its divisors is an integer number (57846027366).

Almost surely, 2^212102100331 is an apocalyptic number.

212102100331 is a deficient number, since it is larger than the sum of its proper divisors (19282009133).

212102100331 is a wasteful number, since it uses less digits than its factorization.

212102100331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19282009132.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212102100331 its reverse (133001201212), we get a palindrome (345103301543).

The spelling of 212102100331 in words is "two hundred twelve billion, one hundred two million, one hundred thousand, three hundred thirty-one".