2221310977 has 2 divisors, whose sum is σ = 2221310978. Its totient is φ = 2221310976.

The previous prime is 2221310953. The next prime is 2221311007. The reversal of 2221310977 is 7790131222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1576963521 + 644347456 = 39711^2 + 25384^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221310977 - 2¹⁵ = 2221278209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221380977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110655488 + 1110655489.

It is an arithmetic number, because the mean of its divisors is an integer number (1110655489).

Almost surely, 2^2221310977 is an apocalyptic number.

It is an amenable number.

2221310977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221310977 is an equidigital number, since it uses as much as digits as its factorization.

2221310977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 2221310977 is about 47130.7858729302. The cubic root of 2221310977 is about 1304.7774857815. Note that the first 3 decimals are identical.

The spelling of 2221310977 in words is "two billion, two hundred twenty-one million, three hundred ten thousand, nine hundred seventy-seven".