1200111303220 has 12 divisors (see below), whose sum is σ = 2520233736804. Its totient is φ = 480044521280.

The previous prime is 1200111303161. The next prime is 1200111303229. The reversal of 1200111303220 is 223031110021.

It can be written as a sum of positive squares in 2 ways, for example, as 926668068496 + 273443234724 = 962636^2 + 522918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200111303194 and 1200111303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200111303229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30002782561 + ... + 30002782600.

It is an arithmetic number, because the mean of its divisors is an integer number (210019478067).

Almost surely, 2^{1200111303220} is an apocalyptic number.

1200111303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200111303220 is an abundant number, since it is smaller than the sum of its proper divisors (1320122433584).

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

1200111303220 is a wasteful number, since it uses less digits than its factorization.

1200111303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60005565170 (or 60005565168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1200111303220 its reverse (223031110021), we get a palindrome (1423142413241).

The spelling of 1200111303220 in words is "one trillion, two hundred billion, one hundred eleven million, three hundred three thousand, two hundred twenty".