20021656230 has 48 divisors (see below), whose sum is σ = 52833281904. Its totient is φ = 5259418560.

The previous prime is 20021656223. The next prime is 20021656243. The reversal of 20021656230 is 3265612002.

20021656230 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 1 + 656 + 2 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20021656194 and 20021656203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1654141 + ... + 1666200.

It is an arithmetic number, because the mean of its divisors is an integer number (1100693373).

Almost surely, 2^20021656230 is an apocalyptic number.

20021656230 is an abundant number, since it is smaller than the sum of its proper divisors (32811625674).

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

20021656230 is a wasteful number, since it uses less digits than its factorization.

20021656230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320421 (or 3320418 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 20021656230 in words is "twenty billion, twenty-one million, six hundred fifty-six thousand, two hundred thirty".