121420523234 has 16 divisors (see below), whose sum is σ = 182314285920. Its totient is φ = 60649123680.

The previous prime is 121420523233. The next prime is 121420523239. The reversal of 121420523234 is 432325024121.

It is a junction number, because it is equal to n+sod(n) for n = 121420523197 and 121420523206.

It is not an unprimeable number, because it can be changed into a prime (121420523233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16558949 + ... + 16566279.

It is an arithmetic number, because the mean of its divisors is an integer number (11394642870).

Almost surely, 2^121420523234 is an apocalyptic number.

121420523234 is a deficient number, since it is larger than the sum of its proper divisors (60893762686).

121420523234 is a wasteful number, since it uses less digits than its factorization.

121420523234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14545.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 121420523234 its reverse (432325024121), we get a palindrome (553745547355).

The spelling of 121420523234 in words is "one hundred twenty-one billion, four hundred twenty million, five hundred twenty-three thousand, two hundred thirty-four".