1202011220020 has 24 divisors (see below), whose sum is σ = 2718394605864. Its totient is φ = 443819527296.

The previous prime is 1202011219957. The next prime is 1202011220041. The reversal of 1202011220020 is 200221102021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 540934564 + 1201470285456 = 23258^2 + 1096116^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 2311559779 + ... + 2311560298.

It is an arithmetic number, because the mean of its divisors is an integer number (113266441911).

Almost surely, 2^{1202011220020} is an apocalyptic number.

1202011220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202011220020 is an abundant number, since it is smaller than the sum of its proper divisors (1516383385844).

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

1202011220020 is a wasteful number, since it uses less digits than its factorization.

1202011220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623120099 (or 4623120097 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1202011220020 its reverse (200221102021), we get a palindrome (1402232322041).

The spelling of 1202011220020 in words is "one trillion, two hundred two billion, eleven million, two hundred twenty thousand, twenty".