20121020253134 has 8 divisors (see below), whose sum is σ = 30201504924528. Its totient is φ = 10053851944960.

The previous prime is 20121020253091. The next prime is 20121020253143. The reversal of 20121020253134 is 43135202012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329087027 + ... + 3329093070.

It is an arithmetic number, because the mean of its divisors is an integer number (3775188115566).

Almost surely, 2^{20121020253134} is an apocalyptic number.

20121020253134 is a deficient number, since it is larger than the sum of its proper divisors (10080484671394).

20121020253134 is a wasteful number, since it uses less digits than its factorization.

20121020253134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658181610.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 20121020253134 its reverse (43135202012102), we get a palindrome (63256222265236).

The spelling of 20121020253134 in words is "twenty trillion, one hundred twenty-one billion, twenty million, two hundred fifty-three thousand, one hundred thirty-four".