1101211021120 has 56 divisors (see below), whose sum is σ = 2996867142144. Its totient is φ = 377558063616.

The previous prime is 1101211021103. The next prime is 1101211021123. The reversal of 1101211021120 is 211201121011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 1101211021120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211021123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245803792 + ... + 245808271.

Almost surely, 2^{1101211021120} is an apocalyptic number.

1101211021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101211021120 is an abundant number, since it is smaller than the sum of its proper divisors (1895656121024).

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

1101211021120 is an equidigital number, since it uses as much as digits as its factorization.

1101211021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491612087 (or 491612077 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1101211021120 its reverse (211201121011), we get a palindrome (1312412142131).

The spelling of 1101211021120 in words is "one trillion, one hundred one billion, two hundred eleven million, twenty-one thousand, one hundred twenty".