2021125572513 has 12 divisors (see below), whose sum is σ = 2987296712400. Its totient is φ = 1316081767896.

The previous prime is 2021125572491. The next prime is 2021125572523. The reversal of 2021125572513 is 3152755211202.

2021125572513 is a `hidden beast` number, since 2 + 0 + 2 + 11 + 25 + 572 + 51 + 3 = 666.

It is not a de Polignac number, because 2021125572513 - 2⁵ = 2021125572481 is a prime.

It is a super-2 number, since 2×2021125572513² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021125572523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2611272963 + ... + 2611273736.

It is an arithmetic number, because the mean of its divisors is an integer number (248941392700).

Almost surely, 2^{2021125572513} is an apocalyptic number.

It is an amenable number.

2021125572513 is a deficient number, since it is larger than the sum of its proper divisors (966171139887).

2021125572513 is a wasteful number, since it uses less digits than its factorization.

2021125572513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222546748 (or 5222546745 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 2021125572513 in words is "two trillion, twenty-one billion, one hundred twenty-five million, five hundred seventy-two thousand, five hundred thirteen".