211142401422 has 16 divisors (see below), whose sum is σ = 422289311952. Its totient is φ = 70380048960.

The previous prime is 211142401387. The next prime is 211142401433. The reversal of 211142401422 is 224104241112.

It is a happy number.

It is a super-2 number, since 2×211142401422² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211142401392 and 211142401401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965748 + ... + 1164024.

It is an arithmetic number, because the mean of its divisors is an integer number (26393081997).

Almost surely, 2^211142401422 is an apocalyptic number.

211142401422 is an abundant number, since it is smaller than the sum of its proper divisors (211146910530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211142401422 is a wasteful number, since it uses less digits than its factorization.

211142401422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375763.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 211142401422 its reverse (224104241112), we get a palindrome (435246642534).

The spelling of 211142401422 in words is "two hundred eleven billion, one hundred forty-two million, four hundred one thousand, four hundred twenty-two".