1301102261 has 4 divisors (see below), whose sum is σ = 1301195724. Its totient is φ = 1301008800.

The previous prime is 1301102251. The next prime is 1301102321. The reversal of 1301102261 is 1622011031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 544522225 + 756580036 = 23335^2 + 27506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301102261 - 2²² = 1296907957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301102251) 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, 21200 + ... + 55241.

It is an arithmetic number, because the mean of its divisors is an integer number (325298931).

Almost surely, 2^1301102261 is an apocalyptic number.

It is an amenable number.

1301102261 is a deficient number, since it is larger than the sum of its proper divisors (93463).

1301102261 is an equidigital number, since it uses as much as digits as its factorization.

1301102261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93462.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1301102261 is about 36070.7951256969. The cubic root of 1301102261 is about 1091.7012574113.

Adding to 1301102261 its reverse (1622011031), we get a palindrome (2923113292).

The spelling of 1301102261 in words is "one billion, three hundred one million, one hundred two thousand, two hundred sixty-one".