1200120211220 has 48 divisors (see below), whose sum is σ = 2884782152448. Its totient is φ = 410827837440.

The previous prime is 1200120211219. The next prime is 1200120211223. The reversal of 1200120211220 is 221120210021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1200120211195 and 1200120211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120211223) 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, 6596912 + ... + 6776391.

It is an arithmetic number, because the mean of its divisors is an integer number (60099628176).

Almost surely, 2^{1200120211220} is an apocalyptic number.

1200120211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200120211220 is an abundant number, since it is smaller than the sum of its proper divisors (1684661941228).

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

1200120211220 is a wasteful number, since it uses less digits than its factorization.

1200120211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13373960 (or 13373958 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200120211220 its reverse (221120210021), we get a palindrome (1421240421241).

The spelling of 1200120211220 in words is "one trillion, two hundred billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty".