221300234031 has 8 divisors (see below), whose sum is σ = 295270900864. Its totient is φ = 147431528280.

The previous prime is 221300234027. The next prime is 221300234033. The reversal of 221300234031 is 130432003122.

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

It is not a de Polignac number, because 221300234031 - 2² = 221300234027 is a prime.

It is a super-2 number, since 2×221300234031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221300233989 and 221300234007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300234033) 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, 25485205 + ... + 25493886.

It is an arithmetic number, because the mean of its divisors is an integer number (36908862608).

Almost surely, 2^221300234031 is an apocalyptic number.

221300234031 is a deficient number, since it is larger than the sum of its proper divisors (73970666833).

221300234031 is a wasteful number, since it uses less digits than its factorization.

221300234031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50980541.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221300234031 its reverse (130432003122), we get a palindrome (351732237153).

The spelling of 221300234031 in words is "two hundred twenty-one billion, three hundred million, two hundred thirty-four thousand, thirty-one".