102111120210020 has 12 divisors (see below), whose sum is σ = 214433352441084. Its totient is φ = 40844448084000.

The previous prime is 102111120209983. The next prime is 102111120210037. The reversal of 102111120210020 is 20012021111201.

It can be written as a sum of positive squares in 2 ways, for example, as 22869895933504 + 79241224276516 = 4782248^2 + 8901754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102111120209977 and 102111120210004.

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, 2552778005231 + ... + 2552778005270.

It is an arithmetic number, because the mean of its divisors is an integer number (17869446036757).

Almost surely, 2^{102111120210020} is an apocalyptic number.

102111120210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111120210020 is an abundant number, since it is smaller than the sum of its proper divisors (112322232231064).

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

102111120210020 is a wasteful number, since it uses less digits than its factorization.

102111120210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105556010510 (or 5105556010508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102111120210020 its reverse (20012021111201), we get a palindrome (122123141321221).

The spelling of 102111120210020 in words is "one hundred two trillion, one hundred eleven billion, one hundred twenty million, two hundred ten thousand, twenty".