211242323400 has 96 divisors (see below), whose sum is σ = 656371382400. Its totient is φ = 56200518400.

The previous prime is 211242323381. The next prime is 211242323401. The reversal of 211242323400 is 4323242112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (211242323401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149835 + ... + 667034.

It is an arithmetic number, because the mean of its divisors is an integer number (6837201900).

Almost surely, 2^211242323400 is an apocalyptic number.

211242323400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211242323400 is an abundant number, since it is smaller than the sum of its proper divisors (445129059000).

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

211242323400 is a wasteful number, since it uses less digits than its factorization.

211242323400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817319 (or 817310 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 211242323400 its reverse (4323242112), we get a palindrome (215565565512).

The spelling of 211242323400 in words is "two hundred eleven billion, two hundred forty-two million, three hundred twenty-three thousand, four hundred".