221130221310 has 48 divisors (see below), whose sum is σ = 575462933136. Its totient is φ = 58914278784.

The previous prime is 221130221303. The next prime is 221130221317. The reversal of 221130221310 is 13122031122.

221130221310 is a `hidden beast` number, since 2 + 2 + 1 + 130 + 221 + 310 = 666.

It is an interprime number because it is at equal distance from previous prime (221130221303) and next prime (221130221317).

It is a super-2 number, since 2×221130221310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130221317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1021144 + ... + 1218603.

It is an arithmetic number, because the mean of its divisors is an integer number (11988811107).

Almost surely, 2^221130221310 is an apocalyptic number.

221130221310 is an abundant number, since it is smaller than the sum of its proper divisors (354332711826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221130221310 is a wasteful number, since it uses less digits than its factorization.

221130221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240857 (or 2240854 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 221130221310 its reverse (13122031122), we get a palindrome (234252252432).

The spelling of 221130221310 in words is "two hundred twenty-one billion, one hundred thirty million, two hundred twenty-one thousand, three hundred ten".