2131022320020 has 144 divisors (see below), whose sum is σ = 7052553930240. Its totient is φ = 516552326400.

The previous prime is 2131022320019. The next prime is 2131022320067. The reversal of 2131022320020 is 200232201312.

2131022320020 is a `hidden beast` number, since 213 + 10 + 223 + 200 + 20 = 666.

It is a super-2 number, since 2×2131022320020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131022319975 and 2131022320002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18675901 + ... + 18789659.

It is an arithmetic number, because the mean of its divisors is an integer number (48976068960).

Almost surely, 2^{2131022320020} is an apocalyptic number.

2131022320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131022320020 is an abundant number, since it is smaller than the sum of its proper divisors (4921531610220).

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

2131022320020 is a wasteful number, since it uses less digits than its factorization.

2131022320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123246 (or 123241 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2131022320020 its reverse (200232201312), we get a palindrome (2331254521332).

The spelling of 2131022320020 in words is "two trillion, one hundred thirty-one billion, twenty-two million, three hundred twenty thousand, twenty".