1222102212121 has 16 divisors (see below), whose sum is σ = 1470592585600. Its totient is φ = 992117507328.

The previous prime is 1222102212119. The next prime is 1222102212131. The reversal of 1222102212121 is 1212122012221.

It is not a de Polignac number, because 1222102212121 - 2¹ = 1222102212119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222102212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734256 + ... + 1727233.

It is an arithmetic number, because the mean of its divisors is an integer number (91912036600).

Almost surely, 2^{1222102212121} is an apocalyptic number.

It is an amenable number.

1222102212121 is a deficient number, since it is larger than the sum of its proper divisors (248490373479).

1222102212121 is a wasteful number, since it uses less digits than its factorization.

1222102212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465248.

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

Adding to 1222102212121 its reverse (1212122012221), we get a palindrome (2434224224342).

The spelling of 1222102212121 in words is "one trillion, two hundred twenty-two billion, one hundred two million, two hundred twelve thousand, one hundred twenty-one".