20211230 has 32 divisors (see below), whose sum is σ = 39572064. Its totient is φ = 7387776.

The previous prime is 20211221. The next prime is 20211241. The reversal of 20211230 is 3211202.

It is a happy number.

It is a super-2 number, since 2×20211230² = 816987636225800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13184 + ... + 14636.

It is an arithmetic number, because the mean of its divisors is an integer number (1236627).

Almost surely, 2^20211230 is an apocalyptic number.

20211230 is a deficient number, since it is larger than the sum of its proper divisors (19360834).

20211230 is a wasteful number, since it uses less digits than its factorization.

20211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20211230 is about 4495.6901583628. The cubic root of 20211230 is about 272.3940277556.

Adding to 20211230 its reverse (3211202), we get a palindrome (23422432).

The spelling of 20211230 in words is "twenty million, two hundred eleven thousand, two hundred thirty".