212224100340 has 96 divisors (see below), whose sum is σ = 682162790400. Its totient is φ = 48290818176.

The previous prime is 212224100237. The next prime is 212224100359. The reversal of 212224100340 is 43001422212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1039290 + ... + 1226609.

It is an arithmetic number, because the mean of its divisors is an integer number (7105862400).

Almost surely, 2^212224100340 is an apocalyptic number.

212224100340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212224100340 is an abundant number, since it is smaller than the sum of its proper divisors (469938690060).

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

212224100340 is a wasteful number, since it uses less digits than its factorization.

212224100340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266141 (or 2266139 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212224100340 its reverse (43001422212), we get a palindrome (255225522552).

The spelling of 212224100340 in words is "two hundred twelve billion, two hundred twenty-four million, one hundred thousand, three hundred forty".