20110121011210 has 16 divisors (see below), whose sum is σ = 36199835586792. Its totient is φ = 8043688900800.

The previous prime is 20110121011207. The next prime is 20110121011289. The reversal of 20110121011210 is 1211012101102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19453630533129 + 656490478081 = 4410627^2 + 810241^2 .

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, 44702961 + ... + 45150580.

Almost surely, 2^{20110121011210} is an apocalyptic number.

20110121011210 is a deficient number, since it is larger than the sum of its proper divisors (16089714575582).

20110121011210 is a wasteful number, since it uses less digits than its factorization.

20110121011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89875929.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20110121011210 its reverse (1211012101102), we get a palindrome (21321133112312).

The spelling of 20110121011210 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred ten".