201101020110 has 128 divisors (see below), whose sum is σ = 549141120000. Its totient is φ = 52349970816.

The previous prime is 201101020079. The next prime is 201101020151. The reversal of 201101020110 is 11020101102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201101020092 and 201101020101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2812381 + ... + 2882999.

It is an arithmetic number, because the mean of its divisors is an integer number (4290165000).

Almost surely, 2^201101020110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201101020110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274570560000).

201101020110 is an abundant number, since it is smaller than the sum of its proper divisors (348040099890).

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

201101020110 is a wasteful number, since it uses less digits than its factorization.

201101020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70887 (or 70881 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201101020110 its reverse (11020101102), we get a palindrome (212121121212).

It can be divided in two parts, 2011010 and 20110, that added together give a triangular number (2031120 = T₂₀₁₅).

The spelling of 201101020110 in words is "two hundred one billion, one hundred one million, twenty thousand, one hundred ten".