211421423222 has 4 divisors (see below), whose sum is σ = 317132134836. Its totient is φ = 105710711610.

The previous prime is 211421423209. The next prime is 211421423237. The reversal of 211421423222 is 222324124112.

It is a happy number.

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

It is a super-2 number, since 2×211421423222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211421423191 and 211421423200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52855355804 + ... + 52855355807.

It is an arithmetic number, because the mean of its divisors is an integer number (79283033709).

Almost surely, 2^211421423222 is an apocalyptic number.

211421423222 is a deficient number, since it is larger than the sum of its proper divisors (105710711614).

211421423222 is a wasteful number, since it uses less digits than its factorization.

211421423222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105710711613.

The product of its digits is 3072, while the sum is 26.

Adding to 211421423222 its reverse (222324124112), we get a palindrome (433745547334).

The spelling of 211421423222 in words is "two hundred eleven billion, four hundred twenty-one million, four hundred twenty-three thousand, two hundred twenty-two".