102320220020 has 12 divisors (see below), whose sum is σ = 214872462084. Its totient is φ = 40928088000.

The previous prime is 102320220019. The next prime is 102320220031. The reversal of 102320220020 is 20022023201.

It can be written as a sum of positive squares in 2 ways, for example, as 80759409124 + 21560810896 = 284182^2 + 146836^2 .

It is a super-4 number, since 4×102320220020⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102320219977 and 102320220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2558005481 + ... + 2558005520.

It is an arithmetic number, because the mean of its divisors is an integer number (17906038507).

Almost surely, 2^102320220020 is an apocalyptic number.

102320220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102320220020 is an abundant number, since it is smaller than the sum of its proper divisors (112552242064).

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

102320220020 is a wasteful number, since it uses less digits than its factorization.

102320220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116011010 (or 5116011008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 102320220020 its reverse (20022023201), we get a palindrome (122342243221).

The spelling of 102320220020 in words is "one hundred two billion, three hundred twenty million, two hundred twenty thousand, twenty".