20121134510 has 32 divisors (see below), whose sum is σ = 36529643520.
Its totient is φ = 7979301792.
The previous prime is 20121134503. The next prime is 20121134521. The reversal of 20121134510 is 1543112102.
Adding to 20121134510 its reverse (1543112102), we get a palindrome (21664246612).
It is a congruent number.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 2035961 + ... + 2045819.
It is an arithmetic number, because the mean of its divisors is an integer number (1141551360).
Almost surely, 220121134510 is an apocalyptic number.
20121134510 is a deficient number, since it is larger than the sum of its proper divisors (16408509010).
20121134510 is a wasteful number, since it uses less digits than its factorization.
20121134510 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11600.
The product of its (nonzero) digits is 240, while the sum is 20.
The spelling of 20121134510 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-four thousand, five hundred ten".