221012101311 has 8 divisors (see below), whose sum is σ = 294691946160. Its totient is φ = 147336828672.

The previous prime is 221012101243. The next prime is 221012101319. The reversal of 221012101311 is 113101210122.

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

It is not a de Polignac number, because 221012101311 - 2⁷ = 221012101183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012101319) 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, 1028626 + ... + 1224783.

It is an arithmetic number, because the mean of its divisors is an integer number (36836493270).

Almost surely, 2^221012101311 is an apocalyptic number.

221012101311 is a deficient number, since it is larger than the sum of its proper divisors (73679844849).

221012101311 is a wasteful number, since it uses less digits than its factorization.

221012101311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286105.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 221012101311 its reverse (113101210122), we get a palindrome (334113311433).

The spelling of 221012101311 in words is "two hundred twenty-one billion, twelve million, one hundred one thousand, three hundred eleven".