2102222477 has 2 divisors, whose sum is σ = 2102222478. Its totient is φ = 2102222476.

The previous prime is 2102222467. The next prime is 2102222483. The reversal of 2102222477 is 7742222012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2087941636 + 14280841 = 45694^2 + 3779^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102222477 - 2⁴ = 2102222461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102222407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051111238 + 1051111239.

It is an arithmetic number, because the mean of its divisors is an integer number (1051111239).

Almost surely, 2^2102222477 is an apocalyptic number.

It is an amenable number.

2102222477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102222477 is an equidigital number, since it uses as much as digits as its factorization.

2102222477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 2102222477 is about 45849.9997491821. Note that the first 3 decimals coincide. The cubic root of 2102222477 is about 1281.0307609105.

Adding to 2102222477 its reverse (7742222012), we get a palindrome (9844444489).

The spelling of 2102222477 in words is "two billion, one hundred two million, two hundred twenty-two thousand, four hundred seventy-seven".