20210110101211 has 4 divisors (see below), whose sum is σ = 20223849130624. Its totient is φ = 20196371071800.

The previous prime is 20210110101161. The next prime is 20210110101217. The reversal of 20210110101211 is 11210101101202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20210110101211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210110101191 and 20210110101200.

It is not an unprimeable number, because it can be changed into a prime (20210110101217) 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, 6869512500 + ... + 6869515441.

It is an arithmetic number, because the mean of its divisors is an integer number (5055962282656).

Almost surely, 2^{20210110101211} is an apocalyptic number.

20210110101211 is a deficient number, since it is larger than the sum of its proper divisors (13739029413).

20210110101211 is a wasteful number, since it uses less digits than its factorization.

20210110101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13739029412.

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

Adding to 20210110101211 its reverse (11210101101202), we get a palindrome (31420211202413).

Subtracting from 20210110101211 its reverse (11210101101202), we obtain a palindrome (9000009000009).

The spelling of 20210110101211 in words is "twenty trillion, two hundred ten billion, one hundred ten million, one hundred one thousand, two hundred eleven".