20100022011 has 24 divisors (see below), whose sum is σ = 29317592304. Its totient is φ = 13268944320.

The previous prime is 20100022009. The next prime is 20100022027. The reversal of 20100022011 is 11022000102.

It is not a de Polignac number, because 20100022011 - 2¹ = 20100022009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20100021984 and 20100022002.

It is not an unprimeable number, because it can be changed into a prime (20100022051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4000681 + ... + 4005701.

It is an arithmetic number, because the mean of its divisors is an integer number (1221566346).

Almost surely, 2^20100022011 is an apocalyptic number.

20100022011 is a deficient number, since it is larger than the sum of its proper divisors (9217570293).

20100022011 is a wasteful number, since it uses less digits than its factorization.

20100022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291 (or 9288 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100022011 its reverse (11022000102), we get a palindrome (31122022113).

The spelling of 20100022011 in words is "twenty billion, one hundred million, twenty-two thousand, eleven".