21033402201 has 48 divisors (see below), whose sum is σ = 36802456704. Its totient is φ = 11300332032.

The previous prime is 21033402191. The next prime is 21033402217. The reversal of 21033402201 is 10220433012.

21033402201 is a `hidden beast` number, since 2 + 103 + 340 + 220 + 1 = 666.

It is not a de Polignac number, because 21033402201 - 2⁷ = 21033402073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21033402241) 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 47 ways as a sum of consecutive naturals, for example, 1075230 + ... + 1094616.

It is an arithmetic number, because the mean of its divisors is an integer number (766717848).

Almost surely, 2^21033402201 is an apocalyptic number.

21033402201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21033402201 is a deficient number, since it is larger than the sum of its proper divisors (15769054503).

21033402201 is a wasteful number, since it uses less digits than its factorization.

21033402201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20430 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21033402201 its reverse (10220433012), we get a palindrome (31253835213).

The spelling of 21033402201 in words is "twenty-one billion, thirty-three million, four hundred two thousand, two hundred one".