1211333130120 has 64 divisors (see below), whose sum is σ = 3634295598720. Its totient is φ = 322995838464.

The previous prime is 1211333130079. The next prime is 1211333130127. The reversal of 1211333130120 is 210313331121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1211333130127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1089669 + ... + 1900011.

It is an arithmetic number, because the mean of its divisors is an integer number (56785868730).

Almost surely, 2^{1211333130120} is an apocalyptic number.

1211333130120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211333130120 is an abundant number, since it is smaller than the sum of its proper divisors (2422962468600).

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

1211333130120 is a wasteful number, since it uses less digits than its factorization.

1211333130120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822814 (or 822810 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1211333130120 its reverse (210313331121), we get a palindrome (1421646461241).

The spelling of 1211333130120 in words is "one trillion, two hundred eleven billion, three hundred thirty-three million, one hundred thirty thousand, one hundred twenty".