102111330420 has 144 divisors (see below), whose sum is σ = 341176897152. Its totient is φ = 24513880320.

The previous prime is 102111330383. The next prime is 102111330427. The reversal of 102111330420 is 24033111201.

102111330420 is a `hidden beast` number, since 1 + 0 + 211 + 1 + 3 + 30 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102111330393 and 102111330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111330427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46407 + ... + 454286.

It is an arithmetic number, because the mean of its divisors is an integer number (2369284008).

Almost surely, 2^102111330420 is an apocalyptic number.

102111330420 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 102111330420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170588448576).

102111330420 is an abundant number, since it is smaller than the sum of its proper divisors (239065566732).

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

102111330420 is a wasteful number, since it uses less digits than its factorization.

102111330420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500822 (or 500817 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102111330420 its reverse (24033111201), we get a palindrome (126144441621).

The spelling of 102111330420 in words is "one hundred two billion, one hundred eleven million, three hundred thirty thousand, four hundred twenty".