211100100220121 has 8 divisors (see below), whose sum is σ = 241263226034304. Its totient is φ = 180938466565920.

The previous prime is 211100100220117. The next prime is 211100100220147. The reversal of 211100100220121 is 121022001001112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211100100220121 - 2² = 211100100220117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211100100220096 and 211100100220105.

It is not an unprimeable number, because it can be changed into a prime (211100100220111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372736820 + ... + 373302741.

It is an arithmetic number, because the mean of its divisors is an integer number (30157903254288).

Almost surely, 2^{211100100220121} is an apocalyptic number.

It is an amenable number.

211100100220121 is a deficient number, since it is larger than the sum of its proper divisors (30163125814183).

211100100220121 is an equidigital number, since it uses as much as digits as its factorization.

211100100220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746079991.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211100100220121 its reverse (121022001001112), we get a palindrome (332122101221233).

The spelling of 211100100220121 in words is "two hundred eleven trillion, one hundred billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".