21221200110022 has 8 divisors (see below), whose sum is σ = 34725600180072. Its totient is φ = 9646000050000.

The previous prime is 21221200110007. The next prime is 21221200110053. The reversal of 21221200110022 is 22001100212212.

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 = 21221200109978 and 21221200110005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482300002479 + ... + 482300002522.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700022509).

Almost surely, 2^{21221200110022} is an apocalyptic number.

21221200110022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21221200110022 is a deficient number, since it is larger than the sum of its proper divisors (13504400070050).

21221200110022 is a wasteful number, since it uses less digits than its factorization.

21221200110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964600005014.

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

Adding to 21221200110022 its reverse (22001100212212), we get a palindrome (43222300322234).

The spelling of 21221200110022 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred million, one hundred ten thousand, twenty-two".