211223011433 has 8 divisors (see below), whose sum is σ = 241447263552. Its totient is φ = 181011143376.

The previous prime is 211223011427. The next prime is 211223011481. The reversal of 211223011433 is 334110322112.

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

It is not a de Polignac number, because 211223011433 - 2¹² = 211223007337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211223011399 and 211223011408.

It is not an unprimeable number, because it can be changed into a prime (211223011633) 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, 3059435 + ... + 3127712.

It is an arithmetic number, because the mean of its divisors is an integer number (30180907944).

Almost surely, 2^211223011433 is an apocalyptic number.

It is an amenable number.

211223011433 is a deficient number, since it is larger than the sum of its proper divisors (30224252119).

211223011433 is an equidigital number, since it uses as much as digits as its factorization.

211223011433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192031.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 211223011433 its reverse (334110322112), we get a palindrome (545333333545).

The spelling of 211223011433 in words is "two hundred eleven billion, two hundred twenty-three million, eleven thousand, four hundred thirty-three".