100231212112 has 10 divisors (see below), whose sum is σ = 194197973498. Its totient is φ = 50115606048.

The previous prime is 100231212091. The next prime is 100231212157. The reversal of 100231212112 is 211212132001.

It can be written as a sum of positive squares in only one way, i.e., 73388977216 + 26842234896 = 270904^2 + 163836^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 6264450757 = 100231212112 / (1 + 0 + 0 + 2 + 3 + 1 + 2 + 1 + 2 + 1 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132225363 + ... + 3132225394.

Almost surely, 2^100231212112 is an apocalyptic number.

It is an amenable number.

100231212112 is a deficient number, since it is larger than the sum of its proper divisors (93966761386).

100231212112 is an equidigital number, since it uses as much as digits as its factorization.

100231212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264450765 (or 6264450759 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 100231212112 its reverse (211212132001), we get a palindrome (311443344113).

The spelling of 100231212112 in words is "one hundred billion, two hundred thirty-one million, two hundred twelve thousand, one hundred twelve".