12112101010 has 16 divisors (see below), whose sum is σ = 23084239896. Its totient is φ = 4559849728.

The previous prime is 12112100999. The next prime is 12112101031. The reversal of 12112101010 is 1010121121.

It can be written as a sum of positive squares in 4 ways, for example, as 10146331441 + 1965769569 = 100729^2 + 44337^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35623657 + ... + 35623996.

Almost surely, 2^12112101010 is an apocalyptic number.

12112101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12112101010 is a deficient number, since it is larger than the sum of its proper divisors (10972138886).

12112101010 is a wasteful number, since it uses less digits than its factorization.

12112101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71247677.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12112101010 its reverse (1010121121), we get a palindrome (13122222131).

The spelling of 12112101010 in words is "twelve billion, one hundred twelve million, one hundred one thousand, ten".