101105281020 has 96 divisors (see below), whose sum is σ = 298318406400. Its totient is φ = 25514625024.

The previous prime is 101105280989. The next prime is 101105281027. The reversal of 101105281020 is 20182501101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101105281027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011327 + ... + 1106793.

It is an arithmetic number, because the mean of its divisors is an integer number (3107483400).

Almost surely, 2^101105281020 is an apocalyptic number.

101105281020 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 101105281020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149159203200).

101105281020 is an abundant number, since it is smaller than the sum of its proper divisors (197213125380).

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

101105281020 is a wasteful number, since it uses less digits than its factorization.

101105281020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96427 (or 96425 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 101105281020 its reverse (20182501101), we get a palindrome (121287782121).

The spelling of 101105281020 in words is "one hundred one billion, one hundred five million, two hundred eighty-one thousand, twenty".