221011012101 has 16 divisors (see below), whose sum is σ = 322216455168. Its totient is φ = 133635279600.

The previous prime is 221011012087. The next prime is 221011012109. The reversal of 221011012101 is 101210110122.

It is not a de Polignac number, because 221011012101 - 2⁵ = 221011012069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011012109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7755271 + ... + 7783716.

It is an arithmetic number, because the mean of its divisors is an integer number (20138528448).

Almost surely, 2^221011012101 is an apocalyptic number.

It is an amenable number.

221011012101 is a deficient number, since it is larger than the sum of its proper divisors (101205443067).

221011012101 is a wasteful number, since it uses less digits than its factorization.

221011012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15539432.

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

Adding to 221011012101 its reverse (101210110122), we get a palindrome (322221122223).

The spelling of 221011012101 in words is "two hundred twenty-one billion, eleven million, twelve thousand, one hundred one".