1261101 has 4 divisors (see below), whose sum is σ = 1681472. Its totient is φ = 840732.

The previous prime is 1261081. The next prime is 1261109. The reversal of 1261101 is 1011621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1261101 - 2⁵ = 1261069 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210181 + ... + 210186.

It is an arithmetic number, because the mean of its divisors is an integer number (420368).

2^1261101 is an apocalyptic number.

It is an amenable number.

1261101 is a deficient number, since it is larger than the sum of its proper divisors (420371).

1261101 is an equidigital number, since it uses as much as digits as its factorization.

1261101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420370.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1261101 is about 1122.9875333235. The cubic root of 1261101 is about 108.0396802067.

Adding to 1261101 its reverse (1011621), we get a palindrome (2272722).

The spelling of 1261101 in words is "one million, two hundred sixty-one thousand, one hundred one".