20212212231 has 8 divisors (see below), whose sum is σ = 29944018160. Its totient is φ = 13474808136.

The previous prime is 20212212211. The next prime is 20212212233. The reversal of 20212212231 is 13221221202.

It is not a de Polignac number, because 20212212231 - 2⁵ = 20212212199 is a prime.

It is a super-2 number, since 2×20212212231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212212233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374300200 + ... + 374300253.

It is an arithmetic number, because the mean of its divisors is an integer number (3743002270).

Almost surely, 2^20212212231 is an apocalyptic number.

20212212231 is a deficient number, since it is larger than the sum of its proper divisors (9731805929).

20212212231 is an equidigital number, since it uses as much as digits as its factorization.

20212212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748600462 (or 748600456 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20212212231 its reverse (13221221202), we get a palindrome (33433433433).

The spelling of 20212212231 in words is "twenty billion, two hundred twelve million, two hundred twelve thousand, two hundred thirty-one".