1200011220120 has 32 divisors (see below), whose sum is σ = 3600033660720. Its totient is φ = 320002992000.

The previous prime is 1200011220113. The next prime is 1200011220127. The reversal of 1200011220120 is 210221100021.

It is an interprime number because it is at equal distance from previous prime (1200011220113) and next prime (1200011220127).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1200011220096 and 1200011220105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200011220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5000046631 + ... + 5000046870.

Almost surely, 2^{1200011220120} is an apocalyptic number.

1200011220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200011220120 is an abundant number, since it is smaller than the sum of its proper divisors (2400022440600).

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

1200011220120 is a wasteful number, since it uses less digits than its factorization.

1200011220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000093515 (or 10000093511 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200011220120 its reverse (210221100021), we get a palindrome (1410232320141).

The spelling of 1200011220120 in words is "one trillion, two hundred billion, eleven million, two hundred twenty thousand, one hundred twenty".