212100100054211 has 4 divisors (see below), whose sum is σ = 217032660520632. Its totient is φ = 207167539587792.

The previous prime is 212100100054201. The next prime is 212100100054217. The reversal of 212100100054211 is 112450001001212.

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-212100100054211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100100054217) 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, 2466280233146 + ... + 2466280233231.

It is an arithmetic number, because the mean of its divisors is an integer number (54258165130158).

Almost surely, 2^{212100100054211} is an apocalyptic number.

212100100054211 is a deficient number, since it is larger than the sum of its proper divisors (4932560466421).

212100100054211 is an equidigital number, since it uses as much as digits as its factorization.

212100100054211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932560466420.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 212100100054211 its reverse (112450001001212), we get a palindrome (324550101055423).

The spelling of 212100100054211 in words is "two hundred twelve trillion, one hundred billion, one hundred million, fifty-four thousand, two hundred eleven".