2131202021020 has 12 divisors (see below), whose sum is σ = 4475524244184. Its totient is φ = 852480808400.

The previous prime is 2131202020951. The next prime is 2131202021077. The reversal of 2131202021020 is 201202021312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131202020985 and 2131202021003.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53280050506 + ... + 53280050545.

It is an arithmetic number, because the mean of its divisors is an integer number (372960353682).

Almost surely, 2^{2131202021020} is an apocalyptic number.

2131202021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131202021020 is an abundant number, since it is smaller than the sum of its proper divisors (2344322223164).

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

2131202021020 is a wasteful number, since it uses less digits than its factorization.

2131202021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106560101060 (or 106560101058 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2131202021020 its reverse (201202021312), we get a palindrome (2332404042332).

The spelling of 2131202021020 in words is "two trillion, one hundred thirty-one billion, two hundred two million, twenty-one thousand, twenty".