20620635011211 has 4 divisors (see below), whose sum is σ = 27494180014952. Its totient is φ = 13747090007472.

The previous prime is 20620635011183. The next prime is 20620635011237. The reversal of 20620635011211 is 11211053602602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20620635011211 - 2⁹ = 20620635010699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20620635011261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3436772501866 + ... + 3436772501871.

It is an arithmetic number, because the mean of its divisors is an integer number (6873545003738).

Almost surely, 2^{20620635011211} is an apocalyptic number.

20620635011211 is a deficient number, since it is larger than the sum of its proper divisors (6873545003741).

20620635011211 is an equidigital number, since it uses as much as digits as its factorization.

20620635011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873545003740.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 20620635011211 its reverse (11211053602602), we get a palindrome (31831688613813).

The spelling of 20620635011211 in words is "twenty trillion, six hundred twenty billion, six hundred thirty-five million, eleven thousand, two hundred eleven".