1200000000220 has 24 divisors (see below), whose sum is σ = 2880000000864. Its totient is φ = 411428571456.

The previous prime is 1200000000203. The next prime is 1200000000239. The reversal of 1200000000220 is 220000000021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

1200000000220 is a modest number, since divided by 220 gives 120 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4285714147 + ... + 4285714426.

It is an arithmetic number, because the mean of its divisors is an integer number (120000000036).

Almost surely, 2^{1200000000220} is an apocalyptic number.

1200000000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200000000220 is an abundant number, since it is smaller than the sum of its proper divisors (1680000000644).

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

1200000000220 is a wasteful number, since it uses less digits than its factorization.

1200000000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571428589 (or 8571428587 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 1200000000220 its reverse (220000000021), we get a palindrome (1420000000241).

The spelling of 1200000000220 in words is "one trillion, two hundred billion, two hundred twenty", and thus it is an aban number.