121431222235 has 16 divisors (see below), whose sum is σ = 146527481376. Its totient is φ = 96605952768.

The previous prime is 121431222193. The next prime is 121431222239. The reversal of 121431222235 is 532222134121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121431222235 - 2¹³ = 121431214043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121431222239) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 934399 + ... + 1056391.

It is an arithmetic number, because the mean of its divisors is an integer number (9157967586).

Almost surely, 2^121431222235 is an apocalyptic number.

121431222235 is a deficient number, since it is larger than the sum of its proper divisors (25096259141).

121431222235 is a wasteful number, since it uses less digits than its factorization.

121431222235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123102.

The product of its digits is 5760, while the sum is 28.

Adding to 121431222235 its reverse (532222134121), we get a palindrome (653653356356).

The spelling of 121431222235 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty-five".