20035435504121 has 16 divisors (see below), whose sum is σ = 20782008000000. Its totient is φ = 19292587613376.

The previous prime is 20035435504111. The next prime is 20035435504141. The reversal of 20035435504121 is 12140553453002.

It is a cyclic number.

It is not a de Polignac number, because 20035435504121 - 2¹⁴ = 20035435487737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20035435504111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101419040 + ... + 101616398.

It is an arithmetic number, because the mean of its divisors is an integer number (1298875500000).

Almost surely, 2^{20035435504121} is an apocalyptic number.

It is an amenable number.

20035435504121 is a deficient number, since it is larger than the sum of its proper divisors (746572495879).

20035435504121 is a wasteful number, since it uses less digits than its factorization.

20035435504121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206776.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 20035435504121 its reverse (12140553453002), we get a palindrome (32175988957123).

The spelling of 20035435504121 in words is "twenty trillion, thirty-five billion, four hundred thirty-five million, five hundred four thousand, one hundred twenty-one".