1101012257 has 2 divisors, whose sum is σ = 1101012258. Its totient is φ = 1101012256.

The previous prime is 1101012197. The next prime is 1101012299. The reversal of 1101012257 is 7522101011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056510016 + 44502241 = 32504^2 + 6671^2 .

It is an emirp because it is prime and its reverse (7522101011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101012257 - 2¹⁸ = 1100750113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101012557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550506128 + 550506129.

It is an arithmetic number, because the mean of its divisors is an integer number (550506129).

Almost surely, 2^1101012257 is an apocalyptic number.

It is an amenable number.

1101012257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101012257 is an equidigital number, since it uses as much as digits as its factorization.

1101012257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 1101012257 is about 33181.5047428534. The cubic root of 1101012257 is about 1032.5966646713.

Adding to 1101012257 its reverse (7522101011), we get a palindrome (8623113268).

The spelling of 1101012257 in words is "one billion, one hundred one million, twelve thousand, two hundred fifty-seven".