1201026961 has 4 divisors (see below), whose sum is σ = 1204372800. Its totient is φ = 1197681124.

The previous prime is 1201026929. The next prime is 1201026989. The reversal of 1201026961 is 1696201021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1696201021 = 79 ⋅21470899.

It is a cyclic number.

It is not a de Polignac number, because 1201026961 - 2⁵ = 1201026929 is a prime.

It is a super-2 number, since 2×1201026961² = 2884931522097791042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201026901) 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, 1672381 + ... + 1673098.

It is an arithmetic number, because the mean of its divisors is an integer number (301093200).

Almost surely, 2^1201026961 is an apocalyptic number.

It is an amenable number.

1201026961 is a deficient number, since it is larger than the sum of its proper divisors (3345839).

1201026961 is an equidigital number, since it uses as much as digits as its factorization.

1201026961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345838.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1201026961 is about 34655.8358866151. The cubic root of 1201026961 is about 1062.9616241105.

Adding to 1201026961 its reverse (1696201021), we get a palindrome (2897227982).

The spelling of 1201026961 in words is "one billion, two hundred one million, twenty-six thousand, nine hundred sixty-one".