2021131313120 has 48 divisors (see below), whose sum is σ = 4822199228448. Its totient is φ = 800448038400.

The previous prime is 2021131313101. The next prime is 2021131313137. The reversal of 2021131313120 is 213131311202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2021131313092 and 2021131313101.

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, 62518844 + ... + 62551163.

It is an arithmetic number, because the mean of its divisors is an integer number (100462483926).

Almost surely, 2^{2021131313120} is an apocalyptic number.

2021131313120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021131313120 is an abundant number, since it is smaller than the sum of its proper divisors (2801067915328).

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

2021131313120 is a wasteful number, since it uses less digits than its factorization.

2021131313120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125070123 (or 125070115 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2021131313120 its reverse (213131311202), we get a palindrome (2234262624322).

The spelling of 2021131313120 in words is "two trillion, twenty-one billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred twenty".