20032230021 has 16 divisors (see below), whose sum is σ = 27013077504. Its totient is φ = 13203599984.

The previous prime is 20032230019. The next prime is 20032230061. The reversal of 20032230021 is 12003223002.

It is a cyclic number.

It is not a de Polignac number, because 20032230021 - 2¹ = 20032230019 is a prime.

It is a super-2 number, since 2×20032230021² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032230061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99430 + ... + 223496.

It is an arithmetic number, because the mean of its divisors is an integer number (1688317344).

Almost surely, 2^20032230021 is an apocalyptic number.

It is an amenable number.

20032230021 is a deficient number, since it is larger than the sum of its proper divisors (6980847483).

20032230021 is a wasteful number, since it uses less digits than its factorization.

20032230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124680.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20032230021 its reverse (12003223002), we get a palindrome (32035453023).

The spelling of 20032230021 in words is "twenty billion, thirty-two million, two hundred thirty thousand, twenty-one".