21001201132 has 6 divisors (see below), whose sum is σ = 36752101988. Its totient is φ = 10500600564.

The previous prime is 21001201129. The next prime is 21001201139. The reversal of 21001201132 is 23110210012.

It is not an unprimeable number, because it can be changed into a prime (21001201139) 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 as a sum of consecutive naturals, namely, 2625150138 + ... + 2625150145.

Almost surely, 2^21001201132 is an apocalyptic number.

It is an amenable number.

21001201132 is a deficient number, since it is larger than the sum of its proper divisors (15750900856).

21001201132 is a wasteful number, since it uses less digits than its factorization.

21001201132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250300287 (or 5250300285 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21001201132 its reverse (23110210012), we get a palindrome (44111411144).

The spelling of 21001201132 in words is "twenty-one billion, one million, two hundred one thousand, one hundred thirty-two".