221311024120101 has 32 divisors (see below), whose sum is σ = 303968837334528. Its totient is φ = 143121413445120.

The previous prime is 221311024120093. The next prime is 221311024120117. The reversal of 221311024120101 is 101021420113122.

It is not a de Polignac number, because 221311024120101 - 2³ = 221311024120093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311024120141) 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, 67921105 + ... + 71104841.

It is an arithmetic number, because the mean of its divisors is an integer number (9499026166704).

Almost surely, 2^{221311024120101} is an apocalyptic number.

It is an amenable number.

221311024120101 is a deficient number, since it is larger than the sum of its proper divisors (82657813214427).

221311024120101 is a wasteful number, since it uses less digits than its factorization.

221311024120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185661.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 221311024120101 its reverse (101021420113122), we get a palindrome (322332444233223).

The spelling of 221311024120101 in words is "two hundred twenty-one trillion, three hundred eleven billion, twenty-four million, one hundred twenty thousand, one hundred one".