221301111131 has 8 divisors (see below), whose sum is σ = 223500941664. Its totient is φ = 219102266880.

The previous prime is 221301111121. The next prime is 221301111149. The reversal of 221301111131 is 131111103122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221301111131 is a prime.

It is a super-2 number, since 2×221301111131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221301111121) 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, 208571 + ... + 697211.

It is an arithmetic number, because the mean of its divisors is an integer number (27937617708).

Almost surely, 2^221301111131 is an apocalyptic number.

221301111131 is a deficient number, since it is larger than the sum of its proper divisors (2199830533).

221301111131 is a wasteful number, since it uses less digits than its factorization.

221301111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493141.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 221301111131 its reverse (131111103122), we get a palindrome (352412214253).

The spelling of 221301111131 in words is "two hundred twenty-one billion, three hundred one million, one hundred eleven thousand, one hundred thirty-one".