221012021121122 has 48 divisors (see below), whose sum is σ = 432072994191552. Its totient is φ = 82364728337760.

The previous prime is 221012021121119. The next prime is 221012021121127. The reversal of 221012021121122 is 221121120210122.

It is a junction number, because it is equal to n+sod(n) for n = 221012021121094 and 221012021121103.

It is not an unprimeable number, because it can be changed into a prime (221012021121127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356386393 + ... + 1356549324.

It is an arithmetic number, because the mean of its divisors is an integer number (9001520712324).

Almost surely, 2^{221012021121122} is an apocalyptic number.

221012021121122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221012021121122 is a deficient number, since it is larger than the sum of its proper divisors (211060973070430).

221012021121122 is a wasteful number, since it uses less digits than its factorization.

221012021121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712935783 (or 2712935760 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221012021121122 its reverse (221121120210122), we get a palindrome (442133141331244).

The spelling of 221012021121122 in words is "two hundred twenty-one trillion, twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".