2112101100221 has 8 divisors (see below), whose sum is σ = 2472703727424. Its totient is φ = 1766216947680.

The previous prime is 2112101100217. The next prime is 2112101100223. The reversal of 2112101100221 is 1220011012112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112101100221 - 2² = 2112101100217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112101100196 and 2112101100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112101100223) 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, 3679618355 + ... + 3679618928.

It is an arithmetic number, because the mean of its divisors is an integer number (309087965928).

Almost surely, 2^{2112101100221} is an apocalyptic number.

It is an amenable number.

2112101100221 is a deficient number, since it is larger than the sum of its proper divisors (360602627203).

2112101100221 is an equidigital number, since it uses as much as digits as its factorization.

2112101100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7359237331.

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

Adding to 2112101100221 its reverse (1220011012112), we get a palindrome (3332112112333).

The spelling of 2112101100221 in words is "two trillion, one hundred twelve billion, one hundred one million, one hundred thousand, two hundred twenty-one".