21032229836 has 24 divisors (see below), whose sum is σ = 37159436160. Its totient is φ = 10415728512.

The previous prime is 21032229811. The next prime is 21032229853. The reversal of 21032229836 is 63892223012.

It is a self number, because there is not a number n which added to its sum of digits gives 21032229836.

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, 115880 + ... + 235568.

It is an arithmetic number, because the mean of its divisors is an integer number (1548309840).

Almost surely, 2^21032229836 is an apocalyptic number.

It is an amenable number.

21032229836 is a deficient number, since it is larger than the sum of its proper divisors (16127206324).

21032229836 is a wasteful number, since it uses less digits than its factorization.

21032229836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120113 (or 120111 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 21032229836 in words is "twenty-one billion, thirty-two million, two hundred twenty-nine thousand, eight hundred thirty-six".