221011020110001 has 32 divisors (see below), whose sum is σ = 324268478764416. Its totient is φ = 133887753753600.

The previous prime is 221011020109991. The next prime is 221011020110003. The reversal of 221011020110001 is 100011020110122.

It is not a de Polignac number, because 221011020110001 - 2¹⁵ = 221011020077233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221011020110003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2876320 + ... + 21220161.

It is an arithmetic number, because the mean of its divisors is an integer number (10133389961388).

Almost surely, 2^{221011020110001} is an apocalyptic number.

It is an amenable number.

221011020110001 is a deficient number, since it is larger than the sum of its proper divisors (103257458654415).

221011020110001 is a wasteful number, since it uses less digits than its factorization.

221011020110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24098814 (or 24098792 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221011020110001 its reverse (100011020110122), we get a palindrome (321022040220123).

The spelling of 221011020110001 in words is "two hundred twenty-one trillion, eleven billion, twenty million, one hundred ten thousand, one".