21122210100022 has 4 divisors (see below), whose sum is σ = 31683315150036. Its totient is φ = 10561105050010.

The previous prime is 21122210100011. The next prime is 21122210100053. The reversal of 21122210100022 is 22000101222112.

It is a happy number.

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

It is a super-2 number, since 2×21122210100022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122210099969 and 21122210100005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280552525004 + ... + 5280552525007.

It is an arithmetic number, because the mean of its divisors is an integer number (7920828787509).

Almost surely, 2^{21122210100022} is an apocalyptic number.

21122210100022 is a deficient number, since it is larger than the sum of its proper divisors (10561105050014).

21122210100022 is a wasteful number, since it uses less digits than its factorization.

21122210100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10561105050013.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122210100022 its reverse (22000101222112), we get a palindrome (43122311322134).

The spelling of 21122210100022 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, one hundred thousand, twenty-two".