221130213001 has 4 divisors (see below), whose sum is σ = 230744570112. Its totient is φ = 211515855892.

The previous prime is 221130212977. The next prime is 221130213019. The reversal of 221130213001 is 100312031122.

221130213001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221130213001 - 2⁷ = 221130212873 is a prime.

It is a super-2 number, since 2×221130213001² (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 (221130213041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4807178521 + ... + 4807178566.

It is an arithmetic number, because the mean of its divisors is an integer number (57686142528).

Almost surely, 2^221130213001 is an apocalyptic number.

It is an amenable number.

221130213001 is a deficient number, since it is larger than the sum of its proper divisors (9614357111).

221130213001 is an equidigital number, since it uses as much as digits as its factorization.

221130213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9614357110.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221130213001 its reverse (100312031122), we get a palindrome (321442244123).

The spelling of 221130213001 in words is "two hundred twenty-one billion, one hundred thirty million, two hundred thirteen thousand, one".