2120377321 has 2 divisors, whose sum is σ = 2120377322. Its totient is φ = 2120377320.

The previous prime is 2120377289. The next prime is 2120377331. The reversal of 2120377321 is 1237730212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2110391721 + 9985600 = 45939^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120377321 - 2⁵ = 2120377289 is a prime.

It is a super-2 number, since 2×2120377321² = 8991999966822274082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2120377321.

It is not a weakly prime, because it can be changed into another prime (2120377331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060188660 + 1060188661.

It is an arithmetic number, because the mean of its divisors is an integer number (1060188661).

Almost surely, 2^2120377321 is an apocalyptic number.

It is an amenable number.

2120377321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120377321 is an equidigital number, since it uses as much as digits as its factorization.

2120377321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 2120377321 is about 46047.5549948094. The cubic root of 2120377321 is about 1284.7078667923.

The spelling of 2120377321 in words is "two billion, one hundred twenty million, three hundred seventy-seven thousand, three hundred twenty-one".