2820957121 has 2 divisors, whose sum is σ = 2820957122. Its totient is φ = 2820957120.

The previous prime is 2820957109. The next prime is 2820957131. The reversal of 2820957121 is 1217590282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1494904896 + 1326052225 = 38664^2 + 36415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820957121 - 2⁹ = 2820956609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2820957131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410478560 + 1410478561.

It is an arithmetic number, because the mean of its divisors is an integer number (1410478561).

Almost surely, 2^2820957121 is an apocalyptic number.

It is an amenable number.

2820957121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820957121 is an equidigital number, since it uses as much as digits as its factorization.

2820957121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2820957121 is about 53112.6832404464. The cubic root of 2820957121 is about 1412.9674641035.

The spelling of 2820957121 in words is "two billion, eight hundred twenty million, nine hundred fifty-seven thousand, one hundred twenty-one".