2061224521 has 2 divisors, whose sum is σ = 2061224522. Its totient is φ = 2061224520.

The previous prime is 2061224509. The next prime is 2061224549. The reversal of 2061224521 is 1254221602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124864521 + 936360000 = 33539^2 + 30600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2061224521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2061224021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030612260 + 1030612261.

It is an arithmetic number, because the mean of its divisors is an integer number (1030612261).

Almost surely, 2^2061224521 is an apocalyptic number.

It is an amenable number.

2061224521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061224521 is an equidigital number, since it uses as much as digits as its factorization.

2061224521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2061224521 is about 45400.7105781396. The cubic root of 2061224521 is about 1272.6483929857.

The spelling of 2061224521 in words is "two billion, sixty-one million, two hundred twenty-four thousand, five hundred twenty-one".