1191701201020 has 24 divisors (see below), whose sum is σ = 2730079115568. Its totient is φ = 433345891200.

The previous prime is 1191701201003. The next prime is 1191701201057. The reversal of 1191701201020 is 201021071911.

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, 2708411601 + ... + 2708412040.

It is an arithmetic number, because the mean of its divisors is an integer number (113753296482).

Almost surely, 2^{1191701201020} is an apocalyptic number.

1191701201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1191701201020 is an abundant number, since it is smaller than the sum of its proper divisors (1538377914548).

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

1191701201020 is a wasteful number, since it uses less digits than its factorization.

1191701201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416823661 (or 5416823659 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 1191701201020 its reverse (201021071911), we get a palindrome (1392722272931).

The spelling of 1191701201020 in words is "one trillion, one hundred ninety-one billion, seven hundred one million, two hundred one thousand, twenty".