21122300011 has 4 divisors (see below), whose sum is σ = 21319704792. Its totient is φ = 20924895232.

The previous prime is 21122299999. The next prime is 21122300041. The reversal of 21122300011 is 11000322112.

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

It is a cyclic number.

It is not a de Polignac number, because 21122300011 - 2⁷ = 21122299883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21122299964 and 21122300000.

It is not an unprimeable number, because it can be changed into a prime (21122300041) 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, 98702230 + ... + 98702443.

It is an arithmetic number, because the mean of its divisors is an integer number (5329926198).

Almost surely, 2^21122300011 is an apocalyptic number.

21122300011 is a deficient number, since it is larger than the sum of its proper divisors (197404781).

21122300011 is a wasteful number, since it uses less digits than its factorization.

21122300011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197404780.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21122300011 its reverse (11000322112), we get a palindrome (32122622123).

The spelling of 21122300011 in words is "twenty-one billion, one hundred twenty-two million, three hundred thousand, eleven".