21033101129 has 8 divisors (see below), whose sum is σ = 21457041480. Its totient is φ = 20612831616.

The previous prime is 21033101113. The next prime is 21033101143. The reversal of 21033101129 is 92110133012.

It can be written as a sum of positive squares in 4 ways, for example, as 6233892025 + 14799209104 = 78955^2 + 121652^2 .

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 21033101129 - 2⁴ = 21033101113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21033101149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906134 + ... + 929055.

It is an arithmetic number, because the mean of its divisors is an integer number (2682130185).

Almost surely, 2^21033101129 is an apocalyptic number.

It is an amenable number.

21033101129 is a deficient number, since it is larger than the sum of its proper divisors (423940351).

21033101129 is a wasteful number, since it uses less digits than its factorization.

21033101129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835419.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21033101129 in words is "twenty-one billion, thirty-three million, one hundred one thousand, one hundred twenty-nine".