1011211057 has 2 divisors, whose sum is σ = 1011211058. Its totient is φ = 1011211056.

The previous prime is 1011211021. The next prime is 1011211079. The reversal of 1011211057 is 7501121101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981005041 + 30206016 = 31321^2 + 5496^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011211057 - 2²⁷ = 876993329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011211757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605528 + 505605529.

It is an arithmetic number, because the mean of its divisors is an integer number (505605529).

Almost surely, 2^1011211057 is an apocalyptic number.

It is an amenable number.

1011211057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011211057 is an equidigital number, since it uses as much as digits as its factorization.

1011211057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 1011211057 is about 31799.5449181274. The cubic root of 1011211057 is about 1003.7231400252.

Adding to 1011211057 its reverse (7501121101), we get a palindrome (8512332158).

The spelling of 1011211057 in words is "one billion, eleven million, two hundred eleven thousand, fifty-seven".