1201078961 has 2 divisors, whose sum is σ = 1201078962. Its totient is φ = 1201078960.

The previous prime is 1201078943. The next prime is 1201078979. The reversal of 1201078961 is 1698701021.

It is a balanced prime because it is at equal distance from previous prime (1201078943) and next prime (1201078979).

It can be written as a sum of positive squares in only one way, i.e., 814759936 + 386319025 = 28544^2 + 19655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201078961 - 2¹⁰ = 1201077937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201078661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600539480 + 600539481.

It is an arithmetic number, because the mean of its divisors is an integer number (600539481).

Almost surely, 2^1201078961 is an apocalyptic number.

It is an amenable number.

1201078961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201078961 is an equidigital number, since it uses as much as digits as its factorization.

1201078961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1201078961 is about 34656.5861128877. The cubic root of 1201078961 is about 1062.9769646506.

Adding to 1201078961 its reverse (1698701021), we get a palindrome (2899779982).

The spelling of 1201078961 in words is "one billion, two hundred one million, seventy-eight thousand, nine hundred sixty-one".