101231212123 has 8 divisors (see below), whose sum is σ = 101723768640. Its totient is φ = 100739231040.

The previous prime is 101231212097. The next prime is 101231212151. The reversal of 101231212123 is 321212132101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101231212123 - 2⁹ = 101231211611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101231212123.

It is not an unprimeable number, because it can be changed into a prime (101231212183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210961 + ... + 496957.

It is an arithmetic number, because the mean of its divisors is an integer number (12715471080).

Almost surely, 2^101231212123 is an apocalyptic number.

101231212123 is a deficient number, since it is larger than the sum of its proper divisors (492556517).

101231212123 is a wasteful number, since it uses less digits than its factorization.

101231212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287717.

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

Adding to 101231212123 its reverse (321212132101), we get a palindrome (422443344224).

The spelling of 101231212123 in words is "one hundred one billion, two hundred thirty-one million, two hundred twelve thousand, one hundred twenty-three".