133231002101 has 4 divisors (see below), whose sum is σ = 133812797100. Its totient is φ = 132649207104.

The previous prime is 133231002097. The next prime is 133231002139. The reversal of 133231002101 is 101200132331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89383060900 + 43847941201 = 298970^2 + 209399^2 .

It is a cyclic number.

It is not a de Polignac number, because 133231002101 - 2² = 133231002097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133231002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133231002301) 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, 290897156 + ... + 290897613.

It is an arithmetic number, because the mean of its divisors is an integer number (33453199275).

Almost surely, 2^133231002101 is an apocalyptic number.

It is an amenable number.

133231002101 is a deficient number, since it is larger than the sum of its proper divisors (581794999).

133231002101 is an equidigital number, since it uses as much as digits as its factorization.

133231002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581794998.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 133231002101 its reverse (101200132331), we get a palindrome (234431134432).

The spelling of 133231002101 in words is "one hundred thirty-three billion, two hundred thirty-one million, two thousand, one hundred one".