20201120221211 has 16 divisors (see below), whose sum is σ = 21970216808064. Its totient is φ = 18503394374784.

The previous prime is 20201120221189. The next prime is 20201120221229. The reversal of 20201120221211 is 11212202110202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201120221211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20201120221211.

It is not an unprimeable number, because it can be changed into a prime (20201120223211) 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, 106747865 + ... + 106936938.

It is an arithmetic number, because the mean of its divisors is an integer number (1373138550504).

Almost surely, 2^{20201120221211} is an apocalyptic number.

20201120221211 is a deficient number, since it is larger than the sum of its proper divisors (1769096586853).

20201120221211 is a wasteful number, since it uses less digits than its factorization.

20201120221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213684970.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20201120221211 its reverse (11212202110202), we get a palindrome (31413322331413).

The spelling of 20201120221211 in words is "twenty trillion, two hundred one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".