11221022021212 has 24 divisors (see below), whose sum is σ = 20115889132752. Its totient is φ = 5473627228800.

The previous prime is 11221022021197. The next prime is 11221022021227. The reversal of 11221022021212 is 21212022012211.

It is an interprime number because it is at equal distance from previous prime (11221022021197) and next prime (11221022021227).

It is a super-2 number, since 2×11221022021212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221022021212.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38778138 + ... + 39066430.

It is an arithmetic number, because the mean of its divisors is an integer number (838162047198).

Almost surely, 2^{11221022021212} is an apocalyptic number.

It is an amenable number.

11221022021212 is a deficient number, since it is larger than the sum of its proper divisors (8894867111540).

11221022021212 is a wasteful number, since it uses less digits than its factorization.

11221022021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525669 (or 525667 counting only the distinct ones).

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

Adding to 11221022021212 its reverse (21212022012211), we get a palindrome (32433044033423).

Subtracting 11221022021212 from its reverse (21212022012211), we obtain a palindrome (9990999990999).

The spelling of 11221022021212 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, twenty-one thousand, two hundred twelve".