211212013223 has 8 divisors (see below), whose sum is σ = 211948105200. Its totient is φ = 210476568960.

The previous prime is 211212013217. The next prime is 211212013261. The reversal of 211212013223 is 322310212112.

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

It is a cyclic number.

It is not a de Polignac number, because 211212013223 - 2⁸ = 211212012967 is a prime.

It is a super-2 number, since 2×211212013223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211212013195 and 211212013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212013823) 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, 496028 + ... + 817598.

It is an arithmetic number, because the mean of its divisors is an integer number (26493513150).

Almost surely, 2^211212013223 is an apocalyptic number.

211212013223 is a deficient number, since it is larger than the sum of its proper divisors (736091977).

211212013223 is a wasteful number, since it uses less digits than its factorization.

211212013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323857.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211212013223 its reverse (322310212112), we get a palindrome (533522225335).

The spelling of 211212013223 in words is "two hundred eleven billion, two hundred twelve million, thirteen thousand, two hundred twenty-three".