2021222112529 has 2 divisors, whose sum is σ = 2021222112530. Its totient is φ = 2021222112528.

The previous prime is 2021222112523. The next prime is 2021222112541. The reversal of 2021222112529 is 9252112221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1899923154129 + 121298958400 = 1378377^2 + 348280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021222112529 - 2³ = 2021222112521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021222112529.

It is not a weakly prime, because it can be changed into another prime (2021222112521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010611056264 + 1010611056265.

It is an arithmetic number, because the mean of its divisors is an integer number (1010611056265).

Almost surely, 2^{2021222112529} is an apocalyptic number.

It is an amenable number.

2021222112529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021222112529 is an equidigital number, since it uses as much as digits as its factorization.

2021222112529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 2021222112529 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, five hundred twenty-nine".