21120221022122 has 8 divisors (see below), whose sum is σ = 32354381140416. Its totient is φ = 10335427308652.

The previous prime is 21120221022059. The next prime is 21120221022139. The reversal of 21120221022122 is 22122012202112.

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 = 21120221022094 and 21120221022103.

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, 112341601088 + ... + 112341601275.

It is an arithmetic number, because the mean of its divisors is an integer number (4044297642552).

Almost surely, 2^{21120221022122} is an apocalyptic number.

21120221022122 is a deficient number, since it is larger than the sum of its proper divisors (11234160118294).

21120221022122 is a wasteful number, since it uses less digits than its factorization.

21120221022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224683202412.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21120221022122 its reverse (22122012202112), we get a palindrome (43242233224234).

The spelling of 21120221022122 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-two".