20221021022 has 4 divisors (see below), whose sum is σ = 30331531536. Its totient is φ = 10110510510.

The previous prime is 20221021001. The next prime is 20221021027. The reversal of 20221021022 is 22012012202.

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

It is a junction number, because it is equal to n+sod(n) for n = 20221020988 and 20221021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055255254 + ... + 5055255257.

It is an arithmetic number, because the mean of its divisors is an integer number (7582882884).

Almost surely, 2^20221021022 is an apocalyptic number.

20221021022 is a deficient number, since it is larger than the sum of its proper divisors (10110510514).

20221021022 is a wasteful number, since it uses less digits than its factorization.

20221021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110510513.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20221021022 its reverse (22012012202), we get a palindrome (42233033224).

The spelling of 20221021022 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, twenty-two".