20100122010211 has 4 divisors (see below), whose sum is σ = 20100132942624. Its totient is φ = 20100111077800.

The previous prime is 20100122010191. The next prime is 20100122010253. The reversal of 20100122010211 is 11201022100102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20100122010211 - 2¹⁵ = 20100121977443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100122010191 and 20100122010200.

It is not an unprimeable number, because it can be changed into a prime (20100123010211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957675 + ... + 6635716.

It is an arithmetic number, because the mean of its divisors is an integer number (5025033235656).

Almost surely, 2^{20100122010211} is an apocalyptic number.

20100122010211 is a deficient number, since it is larger than the sum of its proper divisors (10932413).

20100122010211 is an equidigital number, since it uses as much as digits as its factorization.

20100122010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10932412.

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

Adding to 20100122010211 its reverse (11201022100102), we get a palindrome (31301144110313).

The spelling of 20100122010211 in words is "twenty trillion, one hundred billion, one hundred twenty-two million, ten thousand, two hundred eleven".