221220130210311 has 8 divisors (see below), whose sum is σ = 299000723937520. Its totient is φ = 145459811644992.

The previous prime is 221220130210279. The next prime is 221220130210369. The reversal of 221220130210311 is 113012031022122.

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

It is not a de Polignac number, because 221220130210311 - 2⁵ = 221220130210279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220130210511) 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, 505068790216 + ... + 505068790653.

It is an arithmetic number, because the mean of its divisors is an integer number (37375090492190).

Almost surely, 2^{221220130210311} is an apocalyptic number.

221220130210311 is a deficient number, since it is larger than the sum of its proper divisors (77780593727209).

221220130210311 is a wasteful number, since it uses less digits than its factorization.

221220130210311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010137580945.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221220130210311 its reverse (113012031022122), we get a palindrome (334232161232433).

The spelling of 221220130210311 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred thirty million, two hundred ten thousand, three hundred eleven".