101231123250 has 128 divisors (see below), whose sum is σ = 257659833600. Its totient is φ = 26464704000.

The previous prime is 101231123237. The next prime is 101231123251. The reversal of 101231123250 is 52321132101.

It is not an unprimeable number, because it can be changed into a prime (101231123251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17210310 + ... + 17216190.

It is an arithmetic number, because the mean of its divisors is an integer number (2012967450).

Almost surely, 2^101231123250 is an apocalyptic number.

101231123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 101231123250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128829916800).

101231123250 is an abundant number, since it is smaller than the sum of its proper divisors (156428710350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101231123250 is a wasteful number, since it uses less digits than its factorization.

101231123250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349 (or 6339 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 101231123250 its reverse (52321132101), we get a palindrome (153552255351).

The spelling of 101231123250 in words is "one hundred one billion, two hundred thirty-one million, one hundred twenty-three thousand, two hundred fifty".