221130301311 has 12 divisors (see below), whose sum is σ = 338199284592. Its totient is φ = 138748424256.

The previous prime is 221130301307. The next prime is 221130301373. The reversal of 221130301311 is 113103031122.

221130301311 is a `hidden beast` number, since 2 + 21 + 1 + 30 + 301 + 311 = 666.

It is not a de Polignac number, because 221130301311 - 2² = 221130301307 is a prime.

It is a super-2 number, since 2×221130301311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130301811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 722647891 + ... + 722648196.

It is an arithmetic number, because the mean of its divisors is an integer number (28183273716).

Almost surely, 2^221130301311 is an apocalyptic number.

221130301311 is a deficient number, since it is larger than the sum of its proper divisors (117068983281).

221130301311 is a wasteful number, since it uses less digits than its factorization.

221130301311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445296110 (or 1445296107 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 221130301311 its reverse (113103031122), we get a palindrome (334233332433).

The spelling of 221130301311 in words is "two hundred twenty-one billion, one hundred thirty million, three hundred one thousand, three hundred eleven".