2021125572522 has 160 divisors (see below), whose sum is σ = 5228987841792. Its totient is φ = 571535813376.

The previous prime is 2021125572491. The next prime is 2021125572523. The reversal of 2021125572522 is 2252755211202.

2021125572522 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 12 + 55 + 72 + 522 = 666.

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 79 ways as a sum of consecutive naturals, for example, 272495358 + ... + 272502774.

Almost surely, 2^{2021125572522} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021125572522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614493920896).

2021125572522 is an abundant number, since it is smaller than the sum of its proper divisors (3207862269270).

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

2021125572522 is a wasteful number, since it uses less digits than its factorization.

2021125572522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9874 (or 9865 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 2021125572522 in words is "two trillion, twenty-one billion, one hundred twenty-five million, five hundred seventy-two thousand, five hundred twenty-two".