1201081 has 4 divisors (see below), whose sum is σ = 1372672. Its totient is φ = 1029492.

The previous prime is 1201073. The next prime is 1201087. The reversal of 1201081 is 1801021.

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 a cyclic number.

It is not a de Polignac number, because 1201081 - 2³ = 1201073 is a prime.

It is a super-2 number, since 2×1201081² = 2885191137122, which contains 22 as substring.

1201081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1201087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85785 + ... + 85798.

It is an arithmetic number, because the mean of its divisors is an integer number (343168).

2^1201081 is an apocalyptic number.

It is an amenable number.

1201081 is a deficient number, since it is larger than the sum of its proper divisors (171591).

1201081 is an equidigital number, since it uses as much as digits as its factorization.

1201081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171590.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1201081 is about 1095.9384106783. The cubic root of 1201081 is about 106.2977566168.

The spelling of 1201081 in words is "one million, two hundred one thousand, eighty-one".