20222021011 has 4 divisors (see below), whose sum is σ = 20311105032. Its totient is φ = 20132936992.

The previous prime is 20222021009. The next prime is 20222021161. The reversal of 20222021011 is 11012022202.

It is a happy number.

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 20222021011 - 2¹ = 20222021009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222020982 and 20222021000.

It is not an unprimeable number, because it can be changed into a prime (20222021311) 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, 44541670 + ... + 44542123.

It is an arithmetic number, because the mean of its divisors is an integer number (5077776258).

Almost surely, 2^20222021011 is an apocalyptic number.

20222021011 is a deficient number, since it is larger than the sum of its proper divisors (89084021).

20222021011 is an equidigital number, since it uses as much as digits as its factorization.

20222021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89084020.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20222021011 its reverse (11012022202), we get a palindrome (31234043213).

The spelling of 20222021011 in words is "twenty billion, two hundred twenty-two million, twenty-one thousand, eleven".