1101221211222 has 32 divisors (see below), whose sum is σ = 2669627180160. Its totient is φ = 333703397160.

The previous prime is 1101221211137. The next prime is 1101221211257. The reversal of 1101221211222 is 2221121221011.

1101221211222 is a `hidden beast` number, since 1 + 10 + 1 + 221 + 211 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1101221211195 and 1101221211204.

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 15 ways as a sum of consecutive naturals, for example, 926953288 + ... + 926954475.

It is an arithmetic number, because the mean of its divisors is an integer number (83425849380).

Almost surely, 2^{1101221211222} is an apocalyptic number.

1101221211222 is an abundant number, since it is smaller than the sum of its proper divisors (1568405968938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101221211222 is a wasteful number, since it uses less digits than its factorization.

1101221211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853907785 (or 1853907779 counting only the distinct ones).

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

Adding to 1101221211222 its reverse (2221121221011), we get a palindrome (3322342432233).

The spelling of 1101221211222 in words is "one trillion, one hundred one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".