21010221122 has 8 divisors (see below), whose sum is σ = 34380361872. Its totient is φ = 9550100500.

The previous prime is 21010221121. The next prime is 21010221131. The reversal of 21010221122 is 22112201012.

21010221122 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 = 21010221097 and 21010221106.

It is not an unprimeable number, because it can be changed into a prime (21010221121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477505004 + ... + 477505047.

It is an arithmetic number, because the mean of its divisors is an integer number (4297545234).

Almost surely, 2^21010221122 is an apocalyptic number.

21010221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21010221122 is a deficient number, since it is larger than the sum of its proper divisors (13370140750).

21010221122 is a wasteful number, since it uses less digits than its factorization.

21010221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955010064.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010221122 its reverse (22112201012), we get a palindrome (43122422134).

The spelling of 21010221122 in words is "twenty-one billion, ten million, two hundred twenty-one thousand, one hundred twenty-two".