21133022201 has 8 divisors (see below), whose sum is σ = 22380256584. Its totient is φ = 19886245120.

The previous prime is 21133022191. The next prime is 21133022243. The reversal of 21133022201 is 10222033112.

It can be written as a sum of positive squares in 4 ways, for example, as 781146601 + 20351875600 = 27949^2 + 142660^2 .

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 21133022201 - 2¹⁰ = 21133021177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 21133022201.

It is not an unprimeable number, because it can be changed into a prime (21133024201) 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, 16790 + ... + 206271.

It is an arithmetic number, because the mean of its divisors is an integer number (2797532073).

Almost surely, 2^21133022201 is an apocalyptic number.

It is an amenable number.

21133022201 is a deficient number, since it is larger than the sum of its proper divisors (1247234383).

21133022201 is a wasteful number, since it uses less digits than its factorization.

21133022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228651.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21133022201 its reverse (10222033112), we get a palindrome (31355055313).

The spelling of 21133022201 in words is "twenty-one billion, one hundred thirty-three million, twenty-two thousand, two hundred one".