201210110020 has 24 divisors (see below), whose sum is σ = 423283858200. Its totient is φ = 80342591232.

The previous prime is 201210109999. The next prime is 201210110069. The reversal of 201210110020 is 20011012102.

It can be written as a sum of positive squares in 4 ways, for example, as 8719077376 + 192491032644 = 93376^2 + 438738^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 201210109979 and 201210110006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8829135 + ... + 8851894.

It is an arithmetic number, because the mean of its divisors is an integer number (17636827425).

Almost surely, 2^201210110020 is an apocalyptic number.

201210110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201210110020 is an abundant number, since it is smaller than the sum of its proper divisors (222073748180).

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

201210110020 is a wasteful number, since it uses less digits than its factorization.

201210110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681607 (or 17681605 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201210110020 its reverse (20011012102), we get a palindrome (221221122122).

The spelling of 201210110020 in words is "two hundred one billion, two hundred ten million, one hundred ten thousand, twenty".