1200220011012 has 48 divisors (see below), whose sum is σ = 3137675913792. Its totient is φ = 353873220480.

The previous prime is 1200220011007. The next prime is 1200220011017. The reversal of 1200220011012 is 2101100220021.

It is an interprime number because it is at equal distance from previous prime (1200220011007) and next prime (1200220011017).

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

It is not an unprimeable number, because it can be changed into a prime (1200220011017) 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, 122867763 + ... + 122877530.

It is an arithmetic number, because the mean of its divisors is an integer number (65368248204).

Almost surely, 2^{1200220011012} is an apocalyptic number.

1200220011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200220011012 is an abundant number, since it is smaller than the sum of its proper divisors (1937455902780).

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

1200220011012 is a wasteful number, since it uses less digits than its factorization.

1200220011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245745348 (or 245745346 counting only the distinct ones).

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

Adding to 1200220011012 its reverse (2101100220021), we get a palindrome (3301320231033).

The spelling of 1200220011012 in words is "one trillion, two hundred billion, two hundred twenty million, eleven thousand, twelve".