20512211013235 has 16 divisors (see below), whose sum is σ = 25684989041664. Its totient is φ = 15696219010912.

The previous prime is 20512211013181. The next prime is 20512211013311. The reversal of 20512211013235 is 53231011221502.

It is a cyclic number.

It is not a de Polignac number, because 20512211013235 - 2³⁹ = 19962455199347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31001274 + ... + 31656016.

It is an arithmetic number, because the mean of its divisors is an integer number (1605311815104).

Almost surely, 2^{20512211013235} is an apocalyptic number.

20512211013235 is a deficient number, since it is larger than the sum of its proper divisors (5172778028429).

20512211013235 is a wasteful number, since it uses less digits than its factorization.

20512211013235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927194.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 20512211013235 its reverse (53231011221502), we get a palindrome (73743222234737).

The spelling of 20512211013235 in words is "twenty trillion, five hundred twelve billion, two hundred eleven million, thirteen thousand, two hundred thirty-five".