1321100100133 has 8 divisors (see below), whose sum is σ = 1441218384576. Its totient is φ = 1200984861600.

The previous prime is 1321100100121. The next prime is 1321100100137. The reversal of 1321100100133 is 3310010011231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321100100133 - 2²¹ = 1321098002981 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 (1321100100137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197985 + ... + 1637497.

It is an arithmetic number, because the mean of its divisors is an integer number (180152298072).

Almost surely, 2^{1321100100133} is an apocalyptic number.

It is an amenable number.

1321100100133 is a deficient number, since it is larger than the sum of its proper divisors (120118284443).

1321100100133 is a wasteful number, since it uses less digits than its factorization.

1321100100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522955.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1321100100133 its reverse (3310010011231), we get a palindrome (4631110111364).

The spelling of 1321100100133 in words is "one trillion, three hundred twenty-one billion, one hundred million, one hundred thousand, one hundred thirty-three".