20210220022 has 4 divisors (see below), whose sum is σ = 30315330036. Its totient is φ = 10105110010.

The previous prime is 20210219993. The next prime is 20210220097. The reversal of 20210220022 is 22002201202.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20210219984 and 20210220011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052555004 + ... + 5052555007.

It is an arithmetic number, because the mean of its divisors is an integer number (7578832509).

Almost surely, 2^20210220022 is an apocalyptic number.

20210220022 is a deficient number, since it is larger than the sum of its proper divisors (10105110014).

20210220022 is a wasteful number, since it uses less digits than its factorization.

20210220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105110013.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20210220022 its reverse (22002201202), we get a palindrome (42212421224).

The spelling of 20210220022 in words is "twenty billion, two hundred ten million, two hundred twenty thousand, twenty-two".