1201100057 has 2 divisors, whose sum is σ = 1201100058. Its totient is φ = 1201100056.

The previous prime is 1201100051. The next prime is 1201100059. The reversal of 1201100057 is 7500011021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036131721 + 164968336 = 32189^2 + 12844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201100057 - 2⁴ = 1201100041 is a prime.

Together with 1201100059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1201100051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600550028 + 600550029.

It is an arithmetic number, because the mean of its divisors is an integer number (600550029).

Almost surely, 2^1201100057 is an apocalyptic number.

It is an amenable number.

1201100057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201100057 is an equidigital number, since it uses as much as digits as its factorization.

1201100057 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 17.

The square root of 1201100057 is about 34656.8904692847. The cubic root of 1201100057 is about 1062.9831880635.

Adding to 1201100057 its reverse (7500011021), we get a palindrome (8701111078).

The spelling of 1201100057 in words is "one billion, two hundred one million, one hundred thousand, fifty-seven".