121230443005 has 16 divisors (see below), whose sum is σ = 166991322240. Its totient is φ = 82763232192.

The previous prime is 121230443003. The next prime is 121230443011. The reversal of 121230443005 is 500344032121.

It is a cyclic number.

It is not a de Polignac number, because 121230443005 - 2¹ = 121230443003 is a prime.

It is a super-2 number, since 2×121230443005² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230443003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7621410 + ... + 7637299.

It is an arithmetic number, because the mean of its divisors is an integer number (10436957640).

Almost surely, 2^121230443005 is an apocalyptic number.

It is an amenable number.

121230443005 is a deficient number, since it is larger than the sum of its proper divisors (45760879235).

121230443005 is a wasteful number, since it uses less digits than its factorization.

121230443005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258948.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 121230443005 its reverse (500344032121), we get a palindrome (621574475126).

The spelling of 121230443005 in words is "one hundred twenty-one billion, two hundred thirty million, four hundred forty-three thousand, five".