20121035042053 has 8 divisors (see below), whose sum is σ = 22176510975360. Its totient is φ = 18103274263680.

The previous prime is 20121035042011. The next prime is 20121035042057. The reversal of 20121035042053 is 35024053012102.

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

It is a de Polignac number, because none of the positive numbers 2^k-20121035042053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121035042057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9428787613 + ... + 9428789746.

It is an arithmetic number, because the mean of its divisors is an integer number (2772063871920).

Almost surely, 2^{20121035042053} is an apocalyptic number.

It is an amenable number.

20121035042053 is a deficient number, since it is larger than the sum of its proper divisors (2055475933307).

20121035042053 is a wasteful number, since it uses less digits than its factorization.

20121035042053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18857577467.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20121035042053 its reverse (35024053012102), we get a palindrome (55145088054155).

The spelling of 20121035042053 in words is "twenty trillion, one hundred twenty-one billion, thirty-five million, forty-two thousand, fifty-three".