20211200231 has 16 divisors (see below), whose sum is σ = 21707516160. Its totient is φ = 18775464960.

The previous prime is 20211200209. The next prime is 20211200279. The reversal of 20211200231 is 13200211202.

It is a happy number.

It is not a de Polignac number, because 20211200231 - 2⁶ = 20211200167 is a prime.

It is a super-2 number, since 2×20211200231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211200281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90551 + ... + 220503.

It is an arithmetic number, because the mean of its divisors is an integer number (1356719760).

Almost surely, 2^20211200231 is an apocalyptic number.

20211200231 is a deficient number, since it is larger than the sum of its proper divisors (1496315929).

20211200231 is a wasteful number, since it uses less digits than its factorization.

20211200231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130186.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20211200231 its reverse (13200211202), we get a palindrome (33411411433).

The spelling of 20211200231 in words is "twenty billion, two hundred eleven million, two hundred thousand, two hundred thirty-one".