1101221121132 has 144 divisors (see below), whose sum is σ = 3242751482880. Its totient is φ = 311802825600.

The previous prime is 1101221121109. The next prime is 1101221121139. The reversal of 1101221121132 is 2311211221011.

It is a happy number.

It is a super-2 number, since 2×1101221121132² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1101221121139) 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 47 ways as a sum of consecutive naturals, for example, 1190638 + ... + 1902645.

It is an arithmetic number, because the mean of its divisors is an integer number (22519107520).

Almost surely, 2^{1101221121132} is an apocalyptic number.

1101221121132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101221121132 is an abundant number, since it is smaller than the sum of its proper divisors (2141530361748).

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

1101221121132 is a wasteful number, since it uses less digits than its factorization.

1101221121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093364 (or 3093359 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1101221121132 its reverse (2311211221011), we get a palindrome (3412432342143).

The spelling of 1101221121132 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-two".