211403140420 has 24 divisors (see below), whose sum is σ = 450199366848. Its totient is φ = 83370252000.

The previous prime is 211403140411. The next prime is 211403140423. The reversal of 211403140420 is 24041304112.

It is a happy number.

211403140420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211403140391 and 211403140400.

It is not an unprimeable number, because it can be changed into a prime (211403140423) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 74436306 + ... + 74439145.

It is an arithmetic number, because the mean of its divisors is an integer number (18758306952).

Almost surely, 2^211403140420 is an apocalyptic number.

211403140420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211403140420 is an abundant number, since it is smaller than the sum of its proper divisors (238796226428).

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

211403140420 is a wasteful number, since it uses less digits than its factorization.

211403140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148875531 (or 148875529 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211403140420 its reverse (24041304112), we get a palindrome (235444444532).

The spelling of 211403140420 in words is "two hundred eleven billion, four hundred three million, one hundred forty thousand, four hundred twenty".