1211322003120 has 60 divisors (see below), whose sum is σ = 4068023062896. Its totient is φ = 323019200640.

The previous prime is 1211322003097. The next prime is 1211322003187. The reversal of 1211322003120 is 213002231121.

1211322003120 is a `hidden beast` number, since 1 + 21 + 132 + 200 + 312 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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 = 1211322003093 and 1211322003102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841195116 + ... + 841196555.

Almost surely, 2^{1211322003120} is an apocalyptic number.

1211322003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211322003120 is an abundant number, since it is smaller than the sum of its proper divisors (2856701059776).

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

1211322003120 is a wasteful number, since it uses less digits than its factorization.

1211322003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682391690 (or 1682391681 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1211322003120 its reverse (213002231121), we get a palindrome (1424324234241).

The spelling of 1211322003120 in words is "one trillion, two hundred eleven billion, three hundred twenty-two million, three thousand, one hundred twenty".