21020201200110 has 128 divisors (see below), whose sum is σ = 57802634394624. Its totient is φ = 4792361932800.

The previous prime is 21020201200099. The next prime is 21020201200121. The reversal of 21020201200110 is 1100210202012.

It is an interprime number because it is at equal distance from previous prime (21020201200099) and next prime (21020201200121).

It is a Curzon number.

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, 153748902 + ... + 153885558.

It is an arithmetic number, because the mean of its divisors is an integer number (451583081208).

Almost surely, 2^{21020201200110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21020201200110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28901317197312).

21020201200110 is an abundant number, since it is smaller than the sum of its proper divisors (36782433194514).

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

21020201200110 is a wasteful number, since it uses less digits than its factorization.

21020201200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138538.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21020201200110 its reverse (1100210202012), we get a palindrome (22120411402122).

The spelling of 21020201200110 in words is "twenty-one trillion, twenty billion, two hundred one million, two hundred thousand, one hundred ten".