211404222142 has 4 divisors (see below), whose sum is σ = 317106333216. Its totient is φ = 105702111070.

The previous prime is 211404222119. The next prime is 211404222149. The reversal of 211404222142 is 241222404112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211404222149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52851055534 + ... + 52851055537.

It is an arithmetic number, because the mean of its divisors is an integer number (79276583304).

Almost surely, 2^211404222142 is an apocalyptic number.

211404222142 is a deficient number, since it is larger than the sum of its proper divisors (105702111074).

211404222142 is a wasteful number, since it uses less digits than its factorization.

211404222142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105702111073.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 211404222142 its reverse (241222404112), we get a palindrome (452626626254).

The spelling of 211404222142 in words is "two hundred eleven billion, four hundred four million, two hundred twenty-two thousand, one hundred forty-two".