21065352230 has 16 divisors (see below), whose sum is σ = 40834375344. Its totient is φ = 7777976160.

The previous prime is 21065352199. The next prime is 21065352277. The reversal of 21065352230 is 3225356012.

It is a junction number, because it is equal to n+sod(n) for n = 21065352193 and 21065352202.

It is a congruent number.

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, 81020456 + ... + 81020715.

It is an arithmetic number, because the mean of its divisors is an integer number (2552148459).

Almost surely, 2^21065352230 is an apocalyptic number.

21065352230 is a deficient number, since it is larger than the sum of its proper divisors (19769023114).

21065352230 is a wasteful number, since it uses less digits than its factorization.

21065352230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162041191.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 21065352230 in words is "twenty-one billion, sixty-five million, three hundred fifty-two thousand, two hundred thirty".