105130623221 has 8 divisors (see below), whose sum is σ = 113220660504. Its totient is φ = 97041024000.

The previous prime is 105130623217. The next prime is 105130623251. The reversal of 105130623221 is 122326031501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20674126225 + 84456496996 = 143785^2 + 290614^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 105130623221 - 2² = 105130623217 is a prime.

It is a super-2 number, since 2×105130623221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105130623251) 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, 525221 + ... + 697221.

It is an arithmetic number, because the mean of its divisors is an integer number (14152582563).

Almost surely, 2^105130623221 is an apocalyptic number.

It is an amenable number.

105130623221 is a deficient number, since it is larger than the sum of its proper divisors (8090037283).

105130623221 is a wasteful number, since it uses less digits than its factorization.

105130623221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219031.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 105130623221 its reverse (122326031501), we get a palindrome (227456654722).

The spelling of 105130623221 in words is "one hundred five billion, one hundred thirty million, six hundred twenty-three thousand, two hundred twenty-one".