20101101210211 has 4 divisors (see below), whose sum is σ = 22972687097392. Its totient is φ = 17229515323032.

The previous prime is 20101101210193. The next prime is 20101101210221. The reversal of 20101101210211 is 11201210110102.

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-20101101210211 is a prime.

It is a super-2 number, since 2×20101101210211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101101210191 and 20101101210200.

It is not an unprimeable number, because it can be changed into a prime (20101101210221) 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, 1435792943580 + ... + 1435792943593.

It is an arithmetic number, because the mean of its divisors is an integer number (5743171774348).

Almost surely, 2^{20101101210211} is an apocalyptic number.

20101101210211 is a deficient number, since it is larger than the sum of its proper divisors (2871585887181).

20101101210211 is an equidigital number, since it uses as much as digits as its factorization.

20101101210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871585887180.

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

Adding to 20101101210211 its reverse (11201210110102), we get a palindrome (31302311320313).

The spelling of 20101101210211 in words is "twenty trillion, one hundred one billion, one hundred one million, two hundred ten thousand, two hundred eleven".