121431222254 has 16 divisors (see below), whose sum is σ = 189692388000. Its totient is φ = 58228529184.

The previous prime is 121431222247. The next prime is 121431222281. The reversal of 121431222254 is 452222134121.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 7 ways as a sum of consecutive naturals, for example, 7017002 + ... + 7034285.

It is an arithmetic number, because the mean of its divisors is an integer number (11855774250).

Almost surely, 2^121431222254 is an apocalyptic number.

121431222254 is a deficient number, since it is larger than the sum of its proper divisors (68261165746).

121431222254 is a wasteful number, since it uses less digits than its factorization.

121431222254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14051467.

The product of its digits is 7680, while the sum is 29.

Adding to 121431222254 its reverse (452222134121), we get a palindrome (573653356375).

The spelling of 121431222254 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, two hundred fifty-four".