211125343220 has 24 divisors (see below), whose sum is σ = 483668968608. Its totient is φ = 76772852000.

The previous prime is 211125343183. The next prime is 211125343237. The reversal of 211125343220 is 22343521112.

It is a self number, because there is not a number n which added to its sum of digits gives 211125343220.

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, 479830106 + ... + 479830545.

It is an arithmetic number, because the mean of its divisors is an integer number (20152873692).

Almost surely, 2^211125343220 is an apocalyptic number.

211125343220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211125343220 is an abundant number, since it is smaller than the sum of its proper divisors (272543625388).

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

211125343220 is a wasteful number, since it uses less digits than its factorization.

211125343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959660671 (or 959660669 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 211125343220 its reverse (22343521112), we get a palindrome (233468864332).

The spelling of 211125343220 in words is "two hundred eleven billion, one hundred twenty-five million, three hundred forty-three thousand, two hundred twenty".