21010020202222 has 8 divisors (see below), whose sum is σ = 31515471725400. Its totient is φ = 10504862960424.

The previous prime is 21010020202211. The next prime is 21010020202277. The reversal of 21010020202222 is 22220202001012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21010020202196 and 21010020202205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73391772 + ... + 73677487.

It is an arithmetic number, because the mean of its divisors is an integer number (3939433965675).

Almost surely, 2^{21010020202222} is an apocalyptic number.

21010020202222 is a deficient number, since it is larger than the sum of its proper divisors (10505451523178).

21010020202222 is a wasteful number, since it uses less digits than its factorization.

21010020202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147140690.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21010020202222 its reverse (22220202001012), we get a palindrome (43230222203234).

The spelling of 21010020202222 in words is "twenty-one trillion, ten billion, twenty million, two hundred two thousand, two hundred twenty-two".