2221122121102 has 16 divisors (see below), whose sum is σ = 3348142452000. Its totient is φ = 1105084696480.

The previous prime is 2221122121091. The next prime is 2221122121121. The reversal of 2221122121102 is 2011212211222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221122121102.

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 7 ways as a sum of consecutive naturals, for example, 2072602 + ... + 2955997.

It is an arithmetic number, because the mean of its divisors is an integer number (209258903250).

Almost surely, 2^{2221122121102} is an apocalyptic number.

2221122121102 is a deficient number, since it is larger than the sum of its proper divisors (1127020330898).

2221122121102 is a wasteful number, since it uses less digits than its factorization.

2221122121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029691.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221122121102 its reverse (2011212211222), we get a palindrome (4232334332324).

The spelling of 2221122121102 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred two".