20220021011 has 8 divisors (see below), whose sum is σ = 20788833600. Its totient is φ = 19656983488.

The previous prime is 20220020999. The next prime is 20220021061. The reversal of 20220021011 is 11012002202.

It is a happy number.

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 20220021011 - 2²² = 20215826707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220020983 and 20220021001.

It is not an unprimeable number, because it can be changed into a prime (20220021061) 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, 1436666 + ... + 1450671.

It is an arithmetic number, because the mean of its divisors is an integer number (2598604200).

Almost surely, 2^20220021011 is an apocalyptic number.

20220021011 is a deficient number, since it is larger than the sum of its proper divisors (568812589).

20220021011 is a wasteful number, since it uses less digits than its factorization.

20220021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887533.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20220021011 its reverse (11012002202), we get a palindrome (31232023213).

The spelling of 20220021011 in words is "twenty billion, two hundred twenty million, twenty-one thousand, eleven".