20211222011 has 8 divisors (see below), whose sum is σ = 20245204800. Its totient is φ = 20177269000.

The previous prime is 20211221999. The next prime is 20211222037. The reversal of 20211222011 is 11022211202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211222011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211222091) 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, 1643636 + ... + 1655886.

It is an arithmetic number, because the mean of its divisors is an integer number (2530650600).

Almost surely, 2^20211222011 is an apocalyptic number.

20211222011 is a deficient number, since it is larger than the sum of its proper divisors (33982789).

20211222011 is a wasteful number, since it uses less digits than its factorization.

20211222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14889.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20211222011 its reverse (11022211202), we get a palindrome (31233433213).

The spelling of 20211222011 in words is "twenty billion, two hundred eleven million, two hundred twenty-two thousand, eleven".