20110121002210 has 16 divisors (see below), whose sum is σ = 36198986588856. Its totient is φ = 8043877559808.

The previous prime is 20110121002189. The next prime is 20110121002261. The reversal of 20110121002210 is 1220012101102.

It can be written as a sum of positive squares in 4 ways, for example, as 15240724099969 + 4869396902241 = 3903937^2 + 2206671^2 .

It is a super-3 number, since 3×20110121002210³ (a number of 41 digits) contains 333 as substring.

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, 20860197 + ... + 21802936.

Almost surely, 2^{20110121002210} is an apocalyptic number.

20110121002210 is a deficient number, since it is larger than the sum of its proper divisors (16088865586646).

20110121002210 is a wasteful number, since it uses less digits than its factorization.

20110121002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42710277.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20110121002210 its reverse (1220012101102), we get a palindrome (21330133103312).

The spelling of 20110121002210 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, two thousand, two hundred ten".