1200211022220 has 96 divisors (see below), whose sum is σ = 3855977104896. Its totient is φ = 273240960000.

The previous prime is 1200211022209. The next prime is 1200211022221. The reversal of 1200211022220 is 222201120021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200211022220.

It is not an unprimeable number, because it can be changed into a prime (1200211022221) 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 31 ways as a sum of consecutive naturals, for example, 5587101 + ... + 5797940.

It is an arithmetic number, because the mean of its divisors is an integer number (40166428176).

Almost surely, 2^{1200211022220} is an apocalyptic number.

1200211022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200211022220 is an abundant number, since it is smaller than the sum of its proper divisors (2655766082676).

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

1200211022220 is a wasteful number, since it uses less digits than its factorization.

1200211022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11385311 (or 11385309 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200211022220 its reverse (222201120021), we get a palindrome (1422412142241).

The spelling of 1200211022220 in words is "one trillion, two hundred billion, two hundred eleven million, twenty-two thousand, two hundred twenty".