21021143332 has 24 divisors (see below), whose sum is σ = 42458552640. Its totient is φ = 8919861600.

The previous prime is 21021143329. The next prime is 21021143347. The reversal of 21021143332 is 23334112012.

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, 3713782 + ... + 3719437.

It is an arithmetic number, because the mean of its divisors is an integer number (1769106360).

Almost surely, 2^21021143332 is an apocalyptic number.

It is an amenable number.

21021143332 is an abundant number, since it is smaller than the sum of its proper divisors (21437409308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21021143332 is a wasteful number, since it uses less digits than its factorization.

21021143332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433331 (or 7433329 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21021143332 its reverse (23334112012), we get a palindrome (44355255344).

The spelling of 21021143332 in words is "twenty-one billion, twenty-one million, one hundred forty-three thousand, three hundred thirty-two".