2221012212122 has 32 divisors (see below), whose sum is σ = 3671501724288. Its totient is φ = 999246600000.

The previous prime is 2221012212059. The next prime is 2221012212127. The reversal of 2221012212122 is 2212122101222.

It is a junction number, because it is equal to n+sod(n) for n = 2221012212094 and 2221012212103.

It is not an unprimeable number, because it can be changed into a prime (2221012212127) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7115372 + ... + 7420952.

It is an arithmetic number, because the mean of its divisors is an integer number (114734428884).

Almost surely, 2^{2221012212122} is an apocalyptic number.

2221012212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2221012212122 is a deficient number, since it is larger than the sum of its proper divisors (1450489512166).

2221012212122 is a wasteful number, since it uses less digits than its factorization.

2221012212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308966.

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

Adding to 2221012212122 its reverse (2212122101222), we get a palindrome (4433134313344).

The spelling of 2221012212122 in words is "two trillion, two hundred twenty-one billion, twelve million, two hundred twelve thousand, one hundred twenty-two".