221010110212001 has 16 divisors (see below), whose sum is σ = 255296700289728. Its totient is φ = 189090452198400.

The previous prime is 221010110211983. The next prime is 221010110212013. The reversal of 221010110212001 is 100212011010122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010110212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221010110215001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24565880 + ... + 32334233.

It is an arithmetic number, because the mean of its divisors is an integer number (15956043768108).

Almost surely, 2^{221010110212001} is an apocalyptic number.

It is an amenable number.

221010110212001 is a deficient number, since it is larger than the sum of its proper divisors (34286590077727).

221010110212001 is a wasteful number, since it uses less digits than its factorization.

221010110212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56920912.

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

Adding to 221010110212001 its reverse (100212011010122), we get a palindrome (321222121222123).

The spelling of 221010110212001 in words is "two hundred twenty-one trillion, ten billion, one hundred ten million, two hundred twelve thousand, one".