211111343320 has 32 divisors (see below), whose sum is σ = 479703507120. Its totient is φ = 83608451200.

The previous prime is 211111343263. The next prime is 211111343483. The reversal of 211111343320 is 23343111112.

It is a junction number, because it is equal to n+sod(n) for n = 211111343291 and 211111343300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26123602 + ... + 26131681.

Almost surely, 2^211111343320 is an apocalyptic number.

211111343320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211111343320 is an abundant number, since it is smaller than the sum of its proper divisors (268592163800).

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

211111343320 is a wasteful number, since it uses less digits than its factorization.

211111343320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52255395 (or 52255391 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 211111343320 its reverse (23343111112), we get a palindrome (234454454432).

The spelling of 211111343320 in words is "two hundred eleven billion, one hundred eleven million, three hundred forty-three thousand, three hundred twenty".