101123220500 has 48 divisors (see below), whose sum is σ = 221188968000. Its totient is φ = 40387776800.

The previous prime is 101123220479. The next prime is 101123220551. The reversal of 101123220500 is 5022321101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176051 + ... + 482949.

It is an arithmetic number, because the mean of its divisors is an integer number (4608103500).

Almost surely, 2^101123220500 is an apocalyptic number.

101123220500 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 101123220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110594484000).

101123220500 is an abundant number, since it is smaller than the sum of its proper divisors (120065747500).

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

101123220500 is a wasteful number, since it uses less digits than its factorization.

101123220500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307577 (or 307565 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 101123220500 its reverse (5022321101), we get a palindrome (106145541601).

The spelling of 101123220500 in words is "one hundred one billion, one hundred twenty-three million, two hundred twenty thousand, five hundred".