21000001132 has 24 divisors (see below), whose sum is σ = 40094712000. Its totient is φ = 9544550160.

The previous prime is 21000001091. The next prime is 21000001153. The reversal of 21000001132 is 23110000012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722619 + ... + 751117.

It is an arithmetic number, because the mean of its divisors is an integer number (1670613000).

Almost surely, 2^21000001132 is an apocalyptic number.

21000001132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21000001132 is a deficient number, since it is larger than the sum of its proper divisors (19094710868).

21000001132 is a wasteful number, since it uses less digits than its factorization.

21000001132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45261 (or 45259 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21000001132 its reverse (23110000012), we get a palindrome (44110001144).

The spelling of 21000001132 in words is "twenty-one billion, one thousand, one hundred thirty-two".