102123222020 has 12 divisors (see below), whose sum is σ = 214458766284. Its totient is φ = 40849288800.

The previous prime is 102123222011. The next prime is 102123222023. The reversal of 102123222020 is 20222321201.

It can be written as a sum of positive squares in 2 ways, for example, as 14546289664 + 87576932356 = 120608^2 + 295934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102123222020.

It is not an unprimeable number, because it can be changed into a prime (102123222023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553080531 + ... + 2553080570.

It is an arithmetic number, because the mean of its divisors is an integer number (17871563857).

Almost surely, 2^102123222020 is an apocalyptic number.

102123222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102123222020 is an abundant number, since it is smaller than the sum of its proper divisors (112335544264).

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

102123222020 is a wasteful number, since it uses less digits than its factorization.

102123222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106161110 (or 5106161108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 102123222020 its reverse (20222321201), we get a palindrome (122345543221).

The spelling of 102123222020 in words is "one hundred two billion, one hundred twenty-three million, two hundred twenty-two thousand, twenty".