121425442231 has 4 divisors (see below), whose sum is σ = 127816255000. Its totient is φ = 115034629464.

The previous prime is 121425442223. The next prime is 121425442253. The reversal of 121425442231 is 132244524121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132244524121 = 31 ⋅4265952391.

It is a cyclic number.

It is not a de Polignac number, because 121425442231 - 2³ = 121425442223 is a prime.

It is a super-2 number, since 2×121425442231² (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 = 121425442193 and 121425442202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121425442531) 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, 3195406356 + ... + 3195406393.

It is an arithmetic number, because the mean of its divisors is an integer number (31954063750).

Almost surely, 2^121425442231 is an apocalyptic number.

121425442231 is a deficient number, since it is larger than the sum of its proper divisors (6390812769).

121425442231 is an equidigital number, since it uses as much as digits as its factorization.

121425442231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390812768.

The product of its digits is 15360, while the sum is 31.

Adding to 121425442231 its reverse (132244524121), we get a palindrome (253669966352).

The spelling of 121425442231 in words is "one hundred twenty-one billion, four hundred twenty-five million, four hundred forty-two thousand, two hundred thirty-one".