1211201201120 has 24 divisors (see below), whose sum is σ = 2861462838024. Its totient is φ = 484480480384.

The previous prime is 1211201201047. The next prime is 1211201201129. The reversal of 1211201201120 is 211021021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211201201095 and 1211201201104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211201201129) 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 3 ways as a sum of consecutive naturals, for example, 3785003594 + ... + 3785003913.

It is an arithmetic number, because the mean of its divisors is an integer number (119227618251).

Almost surely, 2^{1211201201120} is an apocalyptic number.

1211201201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211201201120 is an abundant number, since it is smaller than the sum of its proper divisors (1650261636904).

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

1211201201120 is an equidigital number, since it uses as much as digits as its factorization.

1211201201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570007522 (or 7570007514 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211201201120 its reverse (211021021121), we get a palindrome (1422222222241).

The spelling of 1211201201120 in words is "one trillion, two hundred eleven billion, two hundred one million, two hundred one thousand, one hundred twenty".