101140144220 has 24 divisors (see below), whose sum is σ = 219718245600. Its totient is φ = 39061020992.

The previous prime is 101140144213. The next prime is 101140144223. The reversal of 101140144220 is 22441041101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 101140144192 and 101140144201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101140144223) 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, 87189200 + ... + 87190359.

It is an arithmetic number, because the mean of its divisors is an integer number (9154926900).

Almost surely, 2^101140144220 is an apocalyptic number.

101140144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101140144220 is an abundant number, since it is smaller than the sum of its proper divisors (118578101380).

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

101140144220 is a wasteful number, since it uses less digits than its factorization.

101140144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174379597 (or 174379595 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 101140144220 its reverse (22441041101), we get a palindrome (123581185321).

The spelling of 101140144220 in words is "one hundred one billion, one hundred forty million, one hundred forty-four thousand, two hundred twenty".