1101221222211 has 48 divisors (see below), whose sum is σ = 1800108186240. Its totient is φ = 667191064320.

The previous prime is 1101221222209. The next prime is 1101221222273. The reversal of 1101221222211 is 1122221221011.

1101221222211 is a `hidden beast` number, since 1 + 10 + 1 + 221 + 222 + 211 = 666.

It is not a de Polignac number, because 1101221222211 - 2¹ = 1101221222209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101221222411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8405736 + ... + 8535738.

It is an arithmetic number, because the mean of its divisors is an integer number (37502253880).

Almost surely, 2^{1101221222211} is an apocalyptic number.

1101221222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101221222211 is a deficient number, since it is larger than the sum of its proper divisors (698886964029).

1101221222211 is a wasteful number, since it uses less digits than its factorization.

1101221222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133198 (or 133186 counting only the distinct ones).

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

Adding to 1101221222211 its reverse (1122221221011), we get a palindrome (2223442443222).

The spelling of 1101221222211 in words is "one trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".