101323021100 has 72 divisors (see below), whose sum is σ = 251431094880. Its totient is φ = 34718584320.

The previous prime is 101323021049. The next prime is 101323021103. The reversal of 101323021100 is 1120323101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (101323021103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1153952 + ... + 1238648.

It is an arithmetic number, because the mean of its divisors is an integer number (3492098540).

Almost surely, 2^101323021100 is an apocalyptic number.

101323021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101323021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125715547440).

101323021100 is an abundant number, since it is smaller than the sum of its proper divisors (150108073780).

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

101323021100 is a wasteful number, since it uses less digits than its factorization.

101323021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86427 (or 86420 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 101323021100 its reverse (1120323101), we get a palindrome (102443344201).

The spelling of 101323021100 in words is "one hundred one billion, three hundred twenty-three million, twenty-one thousand, one hundred".