11221022021211 has 16 divisors (see below), whose sum is σ = 16725722446720. Its totient is φ = 7434787593960.

The previous prime is 11221022021197. The next prime is 11221022021227. The reversal of 11221022021211 is 11212022012211.

11221022021211 is a `hidden beast` number, since 1 + 1 + 2 + 210 + 220 + 21 + 211 = 666.

It is not a de Polignac number, because 11221022021211 - 2⁹ = 11221022020699 is a prime.

It is a super-2 number, since 2×11221022021211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221022021311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274822005 + ... + 1274830806.

It is an arithmetic number, because the mean of its divisors is an integer number (1045357652920).

Almost surely, 2^{11221022021211} is an apocalyptic number.

11221022021211 is a deficient number, since it is larger than the sum of its proper divisors (5504700425509).

11221022021211 is a wasteful number, since it uses less digits than its factorization.

11221022021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549652983 (or 2549652977 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11221022021211 its reverse (11212022012211), we get a palindrome (22433044033422).

The spelling of 11221022021211 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, twenty-one thousand, two hundred eleven".