1201225305220 has 12 divisors (see below), whose sum is σ = 2522573141004. Its totient is φ = 480490122080.

The previous prime is 1201225305179. The next prime is 1201225305223. The reversal of 1201225305220 is 225035221021.

It can be written as a sum of positive squares in 2 ways, for example, as 406727613504 + 794497691716 = 637752^2 + 891346^2 .

It is not an unprimeable number, because it can be changed into a prime (1201225305223) 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, 30030632611 + ... + 30030632650.

It is an arithmetic number, because the mean of its divisors is an integer number (210214428417).

Almost surely, 2^{1201225305220} is an apocalyptic number.

1201225305220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201225305220 is an abundant number, since it is smaller than the sum of its proper divisors (1321347835784).

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

1201225305220 is a wasteful number, since it uses less digits than its factorization.

1201225305220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60061265270 (or 60061265268 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 1201225305220 in words is "one trillion, two hundred one billion, two hundred twenty-five million, three hundred five thousand, two hundred twenty".