2206157771 has 2 divisors, whose sum is σ = 2206157772. Its totient is φ = 2206157770.

The previous prime is 2206157731. The next prime is 2206157783. The reversal of 2206157771 is 1777516022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2206157771 - 2²⁶ = 2139048907 is a prime.

It is a super-2 number, since 2×2206157771² = 9734264221087376882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2206157731) 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, 1103078885 + 1103078886.

It is an arithmetic number, because the mean of its divisors is an integer number (1103078886).

Almost surely, 2^2206157771 is an apocalyptic number.

2206157771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206157771 is an equidigital number, since it uses as much as digits as its factorization.

2206157771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 2206157771 is about 46969.7537890077. The cubic root of 2206157771 is about 1301.8037625739.

The spelling of 2206157771 in words is "two billion, two hundred six million, one hundred fifty-seven thousand, seven hundred seventy-one".