20110211021010 has 128 divisors (see below), whose sum is σ = 53879687516160. Its totient is φ = 4761558144000.

The previous prime is 20110211021009. The next prime is 20110211021027. The reversal of 20110211021010 is 1012011201102.

It is a super-2 number, since 2×20110211021010² (a number of 27 digits) contains 22 as substring.

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, 380279751 + ... + 380332629.

It is an arithmetic number, because the mean of its divisors is an integer number (420935058720).

Almost surely, 2^{20110211021010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20110211021010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26939843758080).

20110211021010 is an abundant number, since it is smaller than the sum of its proper divisors (33769476495150).

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

20110211021010 is a wasteful number, since it uses less digits than its factorization.

20110211021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79744.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20110211021010 its reverse (1012011201102), we get a palindrome (21122222222112).

The spelling of 20110211021010 in words is "twenty trillion, one hundred ten billion, two hundred eleven million, twenty-one thousand, ten".