20110122011 has 8 divisors (see below), whose sum is σ = 22985028864. Its totient is φ = 17235723240.

The previous prime is 20110121971. The next prime is 20110122017. The reversal of 20110122011 is 11022101102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20110122011 - 2²² = 20105927707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110121983 and 20110122001.

It is not an unprimeable number, because it can be changed into a prime (20110122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38045 + ... + 204126.

It is an arithmetic number, because the mean of its divisors is an integer number (2873128608).

Almost surely, 2^20110122011 is an apocalyptic number.

20110122011 is a deficient number, since it is larger than the sum of its proper divisors (2874906853).

20110122011 is a wasteful number, since it uses less digits than its factorization.

20110122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254041.

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

Adding to 20110122011 its reverse (11022101102), we get a palindrome (31132223113).

The spelling of 20110122011 in words is "twenty billion, one hundred ten million, one hundred twenty-two thousand, eleven".