20101100022011 has 4 divisors (see below), whose sum is σ = 20217291351792. Its totient is φ = 19984908692232.

The previous prime is 20101100021999. The next prime is 20101100022049. The reversal of 20101100022011 is 11022000110102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101100022011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101100021983 and 20101100022001.

It is not an unprimeable number, because it can be changed into a prime (20101100022911) 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, 58095664631 + ... + 58095664976.

It is an arithmetic number, because the mean of its divisors is an integer number (5054322837948).

Almost surely, 2^{20101100022011} is an apocalyptic number.

20101100022011 is a deficient number, since it is larger than the sum of its proper divisors (116191329781).

20101100022011 is a wasteful number, since it uses less digits than its factorization.

20101100022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116191329780.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101100022011 its reverse (11022000110102), we get a palindrome (31123100132113).

The spelling of 20101100022011 in words is "twenty trillion, one hundred one billion, one hundred million, twenty-two thousand, eleven".