21010220100022 has 8 divisors (see below), whose sum is σ = 31515350045256. Its totient is φ = 10505103418272.

The previous prime is 21010220100013. The next prime is 21010220100053. The reversal of 21010220100022 is 22000102201012.

It is a happy number.

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 = 21010220099975 and 21010220100011.

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, 3224013 + ... + 7239799.

It is an arithmetic number, because the mean of its divisors is an integer number (3939418755657).

Almost surely, 2^{21010220100022} is an apocalyptic number.

21010220100022 is a deficient number, since it is larger than the sum of its proper divisors (10505129945234).

21010220100022 is a wasteful number, since it uses less digits than its factorization.

21010220100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631742.

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

Adding to 21010220100022 its reverse (22000102201012), we get a palindrome (43010322301034).

The spelling of 21010220100022 in words is "twenty-one trillion, ten billion, two hundred twenty million, one hundred thousand, twenty-two".