1122212221021 has 16 divisors (see below), whose sum is σ = 1169341246080. Its totient is φ = 1076032741120.

The previous prime is 1122212221003. The next prime is 1122212221051. The reversal of 1122212221021 is 1201222122211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122212221021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122212221021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212221001) 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 15 ways as a sum of consecutive naturals, for example, 10729440 + ... + 10833526.

It is an arithmetic number, because the mean of its divisors is an integer number (73083827880).

Almost surely, 2^{1122212221021} is an apocalyptic number.

It is an amenable number.

1122212221021 is a deficient number, since it is larger than the sum of its proper divisors (47129025059).

1122212221021 is a wasteful number, since it uses less digits than its factorization.

1122212221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108644.

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

Adding to 1122212221021 its reverse (1201222122211), we get a palindrome (2323434343232).

The spelling of 1122212221021 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, twenty-one".