1230240410221 has 4 divisors (see below), whose sum is σ = 1242421008444. Its totient is φ = 1218059812000.

The previous prime is 1230240410159. The next prime is 1230240410227. The reversal of 1230240410221 is 1220140420321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1044608687721 + 185631722500 = 1022061^2 + 430850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230240410221 - 2⁷ = 1230240410093 is a prime.

It is a super-2 number, since 2×1230240410221² (a number of 25 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 = 1230240410192 and 1230240410201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230240410227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6090298960 + ... + 6090299161.

It is an arithmetic number, because the mean of its divisors is an integer number (310605252111).

Almost surely, 2^{1230240410221} is an apocalyptic number.

It is an amenable number.

1230240410221 is a deficient number, since it is larger than the sum of its proper divisors (12180598223).

1230240410221 is a wasteful number, since it uses less digits than its factorization.

1230240410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180598222.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1230240410221 its reverse (1220140420321), we get a palindrome (2450380830542).

It can be divided in two parts, 1230240 and 410221, that added together give a palindrome (1640461).

The spelling of 1230240410221 in words is "one trillion, two hundred thirty billion, two hundred forty million, four hundred ten thousand, two hundred twenty-one".