20102211121011 has 16 divisors (see below), whose sum is σ = 27317942064000. Its totient is φ = 13144988907008.

The previous prime is 20102211120991. The next prime is 20102211121039. The reversal of 20102211121011 is 11012111220102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20102211121011 - 2⁹ = 20102211120499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102211121411) 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, 126392481 + ... + 126551426.

It is an arithmetic number, because the mean of its divisors is an integer number (1707371379000).

Almost surely, 2^{20102211121011} is an apocalyptic number.

20102211121011 is a deficient number, since it is larger than the sum of its proper divisors (7215730942989).

20102211121011 is a wasteful number, since it uses less digits than its factorization.

20102211121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252944418.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20102211121011 its reverse (11012111220102), we get a palindrome (31114322341113).

Subtracting from 20102211121011 its reverse (11012111220102), we obtain a palindrome (9090099900909).

The spelling of 20102211121011 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred twenty-one thousand, eleven".