121443141431 has 16 divisors (see below), whose sum is σ = 127176324480. Its totient is φ = 115881342720.

The previous prime is 121443141403. The next prime is 121443141473. The reversal of 121443141431 is 134141344121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121443141431 - 2³⁰ = 120369399607 is a prime.

It is a super-2 number, since 2×121443141431² (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 = 121443141394 and 121443141403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121443141931) 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 15 ways as a sum of consecutive naturals, for example, 76706 + ... + 498768.

It is an arithmetic number, because the mean of its divisors is an integer number (7948520280).

Almost surely, 2^121443141431 is an apocalyptic number.

121443141431 is a deficient number, since it is larger than the sum of its proper divisors (5733183049).

121443141431 is an equidigital number, since it uses as much as digits as its factorization.

121443141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422266.

The product of its digits is 4608, while the sum is 29.

Adding to 121443141431 its reverse (134141344121), we get a palindrome (255584485552).

The spelling of 121443141431 in words is "one hundred twenty-one billion, four hundred forty-three million, one hundred forty-one thousand, four hundred thirty-one".