1201261730000 has 50 divisors (see below), whose sum is σ = 2908374798714. Its totient is φ = 480504688000.

The previous prime is 1201261729981. The next prime is 1201261730003. The reversal of 1201261730000 is 371621021.

It can be written as a sum of positive squares in 5 ways, for example, as 185044508224 + 1016217221776 = 430168^2 + 1008076^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201261730003) 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 9 ways as a sum of consecutive naturals, for example, 60053087 + ... + 60073086.

Almost surely, 2^{1201261730000} is an apocalyptic number.

1201261730000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201261730000 is an abundant number, since it is smaller than the sum of its proper divisors (1707113068714).

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

1201261730000 is an equidigital number, since it uses as much as digits as its factorization.

1201261730000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120126201 (or 120126180 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 1201261730000 in words is "one trillion, two hundred one billion, two hundred sixty-one million, seven hundred thirty thousand".