100231220212 has 6 divisors (see below), whose sum is σ = 175404635378. Its totient is φ = 50115610104.

The previous prime is 100231220179. The next prime is 100231220213. The reversal of 100231220212 is 212022132001.

It is a happy number.

100231220212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 91540133136 + 8691087076 = 302556^2 + 93226^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231220213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12528902523 + ... + 12528902530.

Almost surely, 2^100231220212 is an apocalyptic number.

It is an amenable number.

100231220212 is a deficient number, since it is larger than the sum of its proper divisors (75173415166).

100231220212 is a wasteful number, since it uses less digits than its factorization.

100231220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25057805057 (or 25057805055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100231220212 its reverse (212022132001), we get a palindrome (312253352213).

The spelling of 100231220212 in words is "one hundred billion, two hundred thirty-one million, two hundred twenty thousand, two hundred twelve".