3331201100261 has 2 divisors, whose sum is σ = 3331201100262. Its totient is φ = 3331201100260.

The previous prime is 3331201100251. The next prime is 3331201100371. The reversal of 3331201100261 is 1620011021333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2064437344225 + 1266763756036 = 1436815^2 + 1125506^2 .

It is a cyclic number.

It is not a de Polignac number, because 3331201100261 - 2¹⁸ = 3331200838117 is a prime.

It is a super-2 number, since 2×3331201100261² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3331201100231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665600550130 + 1665600550131.

It is an arithmetic number, because the mean of its divisors is an integer number (1665600550131).

Almost surely, 2^{3331201100261} is an apocalyptic number.

It is an amenable number.

3331201100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3331201100261 is an equidigital number, since it uses as much as digits as its factorization.

3331201100261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 3331201100261 its reverse (1620011021333), we get a palindrome (4951212121594).

The spelling of 3331201100261 in words is "three trillion, three hundred thirty-one billion, two hundred one million, one hundred thousand, two hundred sixty-one".