101212231312 has 20 divisors (see below), whose sum is σ = 196827697980. Its totient is φ = 50417986688.

The previous prime is 101212231301. The next prime is 101212231313. The reversal of 101212231312 is 213132212101.

It can be written as a sum of positive squares in 2 ways, for example, as 20962406656 + 80249824656 = 144784^2 + 283284^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 101212231312.

It is not an unprimeable number, because it can be changed into a prime (101212231313) 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, 11753623 + ... + 11762230.

It is an arithmetic number, because the mean of its divisors is an integer number (9841384899).

Almost surely, 2^101212231312 is an apocalyptic number.

It is an amenable number.

101212231312 is a deficient number, since it is larger than the sum of its proper divisors (95615466668).

101212231312 is a wasteful number, since it uses less digits than its factorization.

101212231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23516130 (or 23516124 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101212231312 its reverse (213132212101), we get a palindrome (314344443413).

The spelling of 101212231312 in words is "one hundred one billion, two hundred twelve million, two hundred thirty-one thousand, three hundred twelve".