212211121123 has 8 divisors (see below), whose sum is σ = 217862704080. Its totient is φ = 206582190720.

The previous prime is 212211121079. The next prime is 212211121153. The reversal of 212211121123 is 321121112212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212211121123 is a prime.

It is a super-2 number, since 2×212211121123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212211121123.

It is not an unprimeable number, because it can be changed into a prime (212211121153) 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, 5644153 + ... + 5681626.

It is an arithmetic number, because the mean of its divisors is an integer number (27232838010).

Almost surely, 2^212211121123 is an apocalyptic number.

212211121123 is a deficient number, since it is larger than the sum of its proper divisors (5651582957).

212211121123 is a wasteful number, since it uses less digits than its factorization.

212211121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326277.

The product of its digits is 96, while the sum is 19.

Adding to 212211121123 its reverse (321121112212), we get a palindrome (533332233335).

The spelling of 212211121123 in words is "two hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-three".