211223323122122 has 4 divisors (see below), whose sum is σ = 316834984683186. Its totient is φ = 105611661561060.

The previous prime is 211223323122107. The next prime is 211223323122169. The reversal of 211223323122122 is 221221323322112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147884789102521 + 63338534019601 = 12160789^2 + 7958551^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805830780529 + ... + 52805830780532.

Almost surely, 2^{211223323122122} is an apocalyptic number.

211223323122122 is a deficient number, since it is larger than the sum of its proper divisors (105611661561064).

211223323122122 is a wasteful number, since it uses less digits than its factorization.

211223323122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105611661561063.

The product of its digits is 6912, while the sum is 29.

Adding to 211223323122122 its reverse (221221323322112), we get a palindrome (432444646444234).

The spelling of 211223323122122 in words is "two hundred eleven trillion, two hundred twenty-three billion, three hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-two".