121431222135 has 24 divisors (see below), whose sum is σ = 210527837520. Its totient is φ = 64748840832.

The previous prime is 121431222097. The next prime is 121431222161. The reversal of 121431222135 is 531222134121.

It is a happy number.

121431222135 is a `hidden beast` number, since 1 + 2 + 1 + 431 + 2 + 221 + 3 + 5 = 666.

It is not a de Polignac number, because 121431222135 - 2⁷ = 121431222007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121431222099 and 121431222108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96550 + ... + 502179.

It is an arithmetic number, because the mean of its divisors is an integer number (8771993230).

Almost surely, 2^121431222135 is an apocalyptic number.

121431222135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121431222135 is a deficient number, since it is larger than the sum of its proper divisors (89096615385).

121431222135 is a wasteful number, since it uses less digits than its factorization.

121431222135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603247 (or 603244 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 121431222135 its reverse (531222134121), we get a palindrome (652653356256).

The spelling of 121431222135 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-five".