211211223020231 has 8 divisors (see below), whose sum is σ = 241742923912224. Its totient is φ = 180769189386240.

The previous prime is 211211223020167. The next prime is 211211223020279. The reversal of 211211223020231 is 132020322112112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211211223020231 - 2⁶ = 211211223020167 is a prime.

It is a super-2 number, since 2×211211223020231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211223020197 and 211211223020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211223020731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22416809450 + ... + 22416818871.

It is an arithmetic number, because the mean of its divisors is an integer number (30217865489028).

Almost surely, 2^{211211223020231} is an apocalyptic number.

211211223020231 is a deficient number, since it is larger than the sum of its proper divisors (30531700891993).

211211223020231 is an equidigital number, since it uses as much as digits as its factorization.

211211223020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44833629001.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211211223020231 its reverse (132020322112112), we get a palindrome (343231545132343).

The spelling of 211211223020231 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-three million, twenty thousand, two hundred thirty-one".